# Show a popup in perspective on all clients if a value changes **URL:** \ **Category:** Ignition\ **Tags:** ignition81, perspective\ **Created:** [June 23, 2022, 7:25pm UTC](https://forum.inductiveautomation.com/t/show-a-popup-in-perspective-on-all-clients-if-a-value-changes/61133 "2022-06-23T19:25:11Z")\ **Posts on this page:** 1\ **Showing post:** 16
**Author:** ![Evan\_Rosonke](https://avatars.discourse-cdn.com/v4/letter/e/8797f3/32.png) [@Evan\_Rosonke](https://forum.inductiveautomation.com/u/Evan_Rosonke)\ **Post date:** [June 27, 2022, 3:36pm UTC](https://forum.inductiveautomation.com/t/show-a-popup-in-perspective-on-all-clients-if-a-value-changes/61133/16 "2022-06-27T15:36:23Z")
Looking at it in the browser session and still have no popup, have tried changing value in designer as well as in studio 5000 to toggle the value. **Below is what happens in the logger when I place logger.info(“{0} | {1}” … inside of the if statement** INFO | jvm 1 | 2022/06/27 10:33:29 | Current value is: INFO | jvm 1 | 2022/06/27 10:33:29 | True INFO | jvm 1 | 2022/06/27 10:33:29 | O2Alarm INFO | jvm 1 | 2022/06/27 10:33:29 | Page/Popups/O2 Alarm Popup INFO | jvm 1 | 2022/06/27 10:33:29 | Current value is: INFO | jvm 1 | 2022/06/27 10:33:29 | True INFO | jvm 1 | 2022/06/27 10:33:29 | I [POPUP] [15:33:29]: efdfcba8-5006-464c-a1a3-56a33a88059e | 172301c6 INFO | jvm 1 | 2022/06/27 10:33:29 | O2Alarm INFO | jvm 1 | 2022/06/27 10:33:29 | Page/Popups/O2 Alarm Popup INFO | jvm 1 | 2022/06/27 10:33:29 | I [POPUP] [15:33:29]: E066391F | Page/Popups/O2 Alarm Popup INFO | jvm 1 | 2022/06/27 10:33:29 | E [t.e.dispatcher] [15:33:29]: ([default]OKC/O2/O2\_Popup\_Trigger, valueChanged) Error executing tag event script: Traceback (most recent call last): INFO | jvm 1 | 2022/06/27 10:33:29 | File “tagevent:valueChanged”, line 16, in valueChanged INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.util.UUID.fromString(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.getSession(AbstractScriptingFunctions.java:91) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.operateOnSession(AbstractScriptingFunctions.java:118) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.operateOnPage(AbstractScriptingFunctions.java:47) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.PerspectiveScriptingFunctions.popupAction(PerspectiveScriptingFunctions.java:616) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.PerspectiveScriptingFunctions.openPopup(PerspectiveScriptingFunctions.java:231) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.lang.reflect.Method.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: Invalid UUID string: E066391F INFO | jvm 1 | 2022/06/27 10:33:29 | INFO | jvm 1 | 2022/06/27 10:33:29 | com.inductiveautomation.ignition.common.script.JythonExecException: Traceback (most recent call last): INFO | jvm 1 | 2022/06/27 10:33:29 | File “tagevent:valueChanged”, line 16, in valueChanged INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.util.UUID.fromString(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.getSession(AbstractScriptingFunctions.java:91) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.operateOnSession(AbstractScriptingFunctions.java:118) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.operateOnPage(AbstractScriptingFunctions.java:47) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.PerspectiveScriptingFunctions.popupAction(PerspectiveScriptingFunctions.java:616) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.PerspectiveScriptingFunctions.openPopup(PerspectiveScriptingFunctions.java:231) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.lang.reflect.Method.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: Invalid UUID string: E066391F INFO | jvm 1 | 2022/06/27 10:33:29 | INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.Py.JavaError(Py.java:547) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.Py.JavaError(Py.java:538) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.PyReflectedFunction. **call** (PyReflectedFunction.java:192) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.ignition.common.script.ScriptManager$ReflectedInstanceFunction. **call** (ScriptManager.java:541) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.PyObject. **call** (PyObject.java:400) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.pycode._pyx34.valueChanged$1(tagevent:valueChanged:8) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.pycode.pyx34.call\_function(tagevent:valueChanged) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.PyTableCode.call(PyTableCode.java:173) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.PyBaseCode.call(PyBaseCode.java:306) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.PyFunction.function\_\_\_call_(PyFunction.java:474) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.PyFunction. **call** (PyFunction.java:469) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.PyFunction. **call** (PyFunction.java:464) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.ignition.common.script.ScriptManager.runFunction(ScriptManager.java:831) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.ignition.common.script.ScriptManager.runFunction(ScriptManager.java:813) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.ignition.gateway.tags.scripting.TagScriptManagerImpl$FunctionInvokerImpl.run(TagScriptManagerImpl.java:533) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.ignition.gateway.tags.scripting.events.AbstractTagScript.invoke(AbstractTagScript.java:34) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.ignition.gateway.tags.scripting.TagScriptManagerImpl$Task.invoke(TagScriptManagerImpl.java:482) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.ignition.gateway.tags.scripting.TagScriptManagerImpl$TagScriptDispatcher.run(TagScriptManagerImpl.java:445) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$ThrowableCatchingRunnable.run(BasicExecutionEngine.java:539) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.util.concurrent.FutureTask.run(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.lang.Thread.run(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | Caused by: org.python.core.PyException: java.lang.IllegalArgumentException: java.lang.IllegalArgumentException: Invalid UUID string: E066391F INFO | jvm 1 | 2022/06/27 10:33:29 | … 25 common frames omitted INFO | jvm 1 | 2022/06/27 10:33:29 | Caused by: java.lang.IllegalArgumentException: Invalid UUID string: E066391F INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.util.UUID.fromString(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.getSession(AbstractScriptingFunctions.java:91) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.operateOnSession(AbstractScriptingFunctions.java:118) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.AbstractScriptingFunctions.operateOnPage(AbstractScriptingFunctions.java:47) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.PerspectiveScriptingFunctions.popupAction(PerspectiveScriptingFunctions.java:616) INFO | jvm 1 | 2022/06/27 10:33:29 | at com.inductiveautomation.perspective.gateway.script.PerspectiveScriptingFunctions.openPopup(PerspectiveScriptingFunctions.java:231) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at java.base/java.lang.reflect.Method.invoke(Unknown Source) INFO | jvm 1 | 2022/06/27 10:33:29 | at org.python.core.PyReflectedFunction. **call** (PyReflectedFunction.java:190) INFO | jvm 1 | 2022/06/27 10:33:29 | … 22 common frames omitted INFO | jvm 1 | 2022/06/27 10:33:32 | I [c.s.p.g.ProductionGatewayHook] [15:33:32]: Unable to check availability of null datasource (Local). INFO | jvm 1 | 2022/06/27 10:33:47 | I [c.s.p.g.ProductionGatewayHook] [15:33:47]: Unable to check availability of null datasource (Local). INFO | jvm 1 | 2022/06/27 10:34:02 | I [c.s.p.g.ProductionGatewayHook] [15:34:02]: Unable to check availability of null datasource (Local). --- _[View the full topic](https://forum.inductiveautomation.com/t/show-a-popup-in-perspective-on-all-clients-if-a-value-changes/61133)._