# \[BUG-13990\] Ignition 8.0.2-rc1 - bug when expression use tag function in alarms bindings **URL:** \ **Category:** Ignition Early Access\ **Tags:** ignition80\ **Created:** [June 3, 2019, 7:31am UTC](https://forum.inductiveautomation.com/t/bug-13990-ignition-8-0-2-rc1-bug-when-expression-use-tag-function-in-alarms-bindings/25488 "2019-06-03T07:31:14Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Post date:** [June 3, 2019, 7:31am UTC](https://forum.inductiveautomation.com/t/bug-13990-ignition-8-0-2-rc1-bug-when-expression-use-tag-function-in-alarms-bindings/25488/1 "2019-06-03T07:31:14Z")
@awalker could you please fill a ticket for this bug. With Ignition **8.0.2-rc1** or the **8.0.3-SNAPSHOT (b2019060102)**, when I try to edit an alarm on a tag inside an udt with only one udt instance created for this udt, it takes about 30 seconds before the popup is closed when I click on “APPLY” I have an Alarm label expression binding : ```auto tag(concat("[default]",{itemPath},".tooltip")) ``` and alarm label expression binding : ```auto {repereEqt} ``` **repereEqt** is a an udt string parameter Note : When I have no instance, there is no delay. I have an error popup : Error saving tag changes Detail ```auto ExecutionException: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: Read timed out caused by GatewayException: Read timed out caused by SocketTimeoutException: Read timed out Ignition v8.0.2-rc1 (b2019052016) Java: Azul Systems, Inc. 11.0.3 ``` If I active the logger **alarm.Execution** , I have the following error on the gateway : BoundProperties 03Jun2019 09:14:26 Error executing bound property. ```auto com.inductiveautomation.ignition.common.expressions.ExpressionException: Timeout exception when reading tag value at com.inductiveautomation.ignition.common.expressions.functions.TagFunction.execute(TagFunction.java:125) at com.inductiveautomation.ignition.common.expressions.FunctionExpression.execute(FunctionExpression.java:66) at com.inductiveautomation.ignition.common.expressions.DefaultFunctionFactory$ConcatFunction.execute(DefaultFunctionFactory.java:367) at com.inductiveautomation.ignition.common.expressions.FunctionExpression.execute(FunctionExpression.java:66) at com.inductiveautomation.ignition.gateway.alarming.evaluation.BoundPropEvalPropertySet$BoundValue.evaluate(BoundPropEvalPropertySet.java:234) at com.inductiveautomation.ignition.gateway.alarming.evaluation.BoundPropEvalPropertySet$BoundValue.evalAndGet(BoundPropEvalPropertySet.java:261) at com.inductiveautomation.ignition.gateway.alarming.evaluation.BoundPropEvalPropertySet.getValues(BoundPropEvalPropertySet.java:186) at com.inductiveautomation.ignition.common.config.AbstractExtendedPropertySet.getValues(AbstractExtendedPropertySet.java:145) at com.inductiveautomation.ignition.common.config.MutablePropertyValueSource.merge(MutablePropertyValueSource.java:16) at com.inductiveautomation.ignition.common.config.BasicPropertySet.(BasicPropertySet.java:47) at com.inductiveautomation.ignition.common.config.BasicPropertySet.(BasicPropertySet.java:42) at com.inductiveautomation.ignition.gateway.alarming.evaluation.Alarm$AlarmPropertyModel.snapshotData(Alarm.java:1145) at com.inductiveautomation.ignition.gateway.alarming.evaluation.Alarm.captureEventData(Alarm.java:698) at com.inductiveautomation.ignition.gateway.alarming.evaluation.Alarm.finishTransitionEvent(Alarm.java:751) at com.inductiveautomation.ignition.gateway.alarming.evaluation.Alarm.initTransitionEvent(Alarm.java:723) at com.inductiveautomation.ignition.gateway.alarming.evaluation.Alarm.evaluate(Alarm.java:539) at com.inductiveautomation.ignition.gateway.alarming.AlarmManagerImpl$AlarmEvaluatorImpl.evaluate(AlarmManagerImpl.java:571) at com.inductiveautomation.ignition.gateway.tags.actors.factories.alarming.AlarmingActor.processValue(AlarmingActor.java:153) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.ExecutableTag.valueChanged(ExecutableTag.java:279) at com.inductiveautomation.ignition.gateway.tags.actors.factories.value.AbstractValueGeneratingActor.fireValueChange(AbstractValueGeneratingActor.java:41) at com.inductiveautomation.ignition.gateway.tags.actors.factories.value.AbstractValueGeneratingActor.setListener(AbstractValueGeneratingActor.java:30) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.ExecutableTag.configureActors(ExecutableTag.java:614) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.ExecutableTag.applyPropertyChangesToTag(ExecutableTag.java:426) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.BasicTagDefinition.managePropertyChanges(BasicTagDefinition.java:629) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.BasicTagDefinition.lambda$new$0(BasicTagDefinition.java:95) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.TagPropertyModel.dispatchPropertiesChanged(TagPropertyModel.java:81) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.TagPropertyModel.onPropertiesChanged(TagPropertyModel.java:42) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.BasicTagDefinition.onInheritedPropertiesChanged(BasicTagDefinition.java:604) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.complex.AbstractTopLevelUdtTag.onSuperPropertiesChanged(AbstractTopLevelUdtTag.java:191) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.complex.TypesFolder$TypeDefinitionNode.lambda$publishPropertiesChanged$1(TypesFolder.java:660) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(Unknown Source) at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source) at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(Unknown Source) at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(Unknown Source) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(Unknown Source) at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source) at java.base/java.util.stream.ReferencePipeline.forEach(Unknown Source) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.complex.TypesFolder$TypeDefinitionNode.publishPropertiesChanged(TypesFolder.java:660) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.complex.AbstractComplexTagDefinitionNode.fireMemberPropertiesChanged(AbstractComplexTagDefinitionNode.java:128) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.complex.UdtFolderNode.fireMemberPropertiesChanged(UdtFolderNode.java:56) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.BasicTagDefinition.managePropertyChanges(BasicTagDefinition.java:635) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.BasicTagDefinition.lambda$new$0(BasicTagDefinition.java:95) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.TagPropertyModel.dispatchPropertiesChanged(TagPropertyModel.java:81) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.TagPropertyModel.onPropertiesChanged(TagPropertyModel.java:42) at com.inductiveautomation.ignition.gateway.tags.runtime.nodes.BasicTagDefinition.configureTag(BasicTagDefinition.java:540) at com.inductiveautomation.ignition.gateway.tags.runtime.TagEvaluationManagerImpl.moveOrEditNode(TagEvaluationManagerImpl.java:618) at com.inductiveautomation.ignition.gateway.tags.runtime.TagEvaluationManagerImpl.processEditInternal(TagEvaluationManagerImpl.java:306) at com.inductiveautomation.ignition.gateway.tags.runtime.TagEvaluationManagerImpl.processEdit(TagEvaluationManagerImpl.java:238) at com.inductiveautomation.ignition.gateway.tags.TagProviderImpl.saveTagConfigInternal(TagProviderImpl.java:604) at com.inductiveautomation.ignition.gateway.tags.TagProviderImpl.lambda$saveTagConfigsAsync$9(TagProviderImpl.java:564) at com.inductiveautomation.ignition.gateway.tags.TagProviderImpl.lambda$exec$2(TagProviderImpl.java:345) at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.base/java.lang.Thread.run(Unknown Source) Caused by: java.util.concurrent.TimeoutException: null at java.base/java.util.concurrent.CompletableFuture.timedGet(Unknown Source) at java.base/java.util.concurrent.CompletableFuture.get(Unknown Source) at com.inductiveautomation.ignition.common.expressions.functions.TagFunction.execute(TagFunction.java:120) ... 57 common frames omitted ``` if I replace the expression binding with ```auto concat("[default]",{itemPath},".tooltip") ``` instead of ```auto tag(concat("[default]",{itemPath},".tooltip")) ``` There is no error. It seems that the issue is a timeout when evaluating expression in alarms with the **tag function**! [udt.json](https://us1.discourse-cdn.com/inductiveautomation/original/2X/d/ddcc470f9c19a0468333f405cc54e6a0c295a4ca.json) (850 Bytes) [tags.json](https://us1.discourse-cdn.com/inductiveautomation/original/2X/d/d035f6670ba9f3c24abfda7ff21e24a885fc9a9c.json) (1.1 KB) ---
**Author:** ![awalker](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/awalker/32/6874_2.png) [@awalker](https://forum.inductiveautomation.com/u/awalker)\ **Post date:** [June 4, 2019, 3:45pm UTC](https://forum.inductiveautomation.com/t/bug-13990-ignition-8-0-2-rc1-bug-when-expression-use-tag-function-in-alarms-bindings/25488/2 "2019-06-04T15:45:46Z")
Hi @mazeyrat, I talked with one of the developers and we think that this is also the same underlying issue as the bug mentioned in your other posts: [[BUG-13990] Ignition 8.0.2-2019-05-09 - designer freeze when creating an UDT instance](http://forum.inductiveautomation.com/t/bug-13990-ignition-8-0-2-2019-05-09-designer-freeze-when-creating-an-udt-instance/24897) and [Ignition 8.0.2-rc1 - udt instance are very long to create](http://forum.inductiveautomation.com/t/ignition-8-0-2-rc1-udt-instance-are-very-long-to-create/25375/6) We’ll update you when its been fixed. ---
**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Post date:** [June 4, 2019, 6:44pm UTC](https://forum.inductiveautomation.com/t/bug-13990-ignition-8-0-2-rc1-bug-when-expression-use-tag-function-in-alarms-bindings/25488/3 "2019-06-04T18:44:23Z")
thanks, I stay tuned to test the fix as soon as possible. ---
**Author:** ![awalker](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/awalker/32/6874_2.png) [@awalker](https://forum.inductiveautomation.com/u/awalker)\ **Post date:** [June 7, 2019, 8:46pm UTC](https://forum.inductiveautomation.com/t/bug-13990-ignition-8-0-2-rc1-bug-when-expression-use-tag-function-in-alarms-bindings/25488/4 "2019-06-07T20:46:29Z")
@mazeyrat, the mentioned ticket has been fixed in the latest build. Please let us know if you are still seeing this issue.