# Global Variable - Project Script Object has no Attribute **URL:** \ **Category:** Ignition\ **Tags:** ignition81, scripting\ **Created:** [January 10, 2024, 5:58pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061 "2024-01-10T17:58:08Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [January 10, 2024, 5:58pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061/1 "2024-01-10T17:58:08Z")
I've got a project script that is having trouble accessing one of it's global variables. ```auto ignitionName = '/ignition-desktop-av4v6h5:' def historyPathConvert_MasterToEdge(self): #if this is an edge panel the path needs to be updated if self.parent.parent.edge: #get the current pens dataset penData = system.dataset.toPyDataSet(self.tagPens) #get headers for the dataset headers = list(penData.getColumnNames()) #initialize empty list newPenData = [] #get the index for the tag path column TAG_PATH_index = penData.getColumnIndex('TAG_PATH') #for each row in the pen dataset for row in penData: #create row as a list newRow = list(row) #update the tag path to the tag provider newRow[TAG_PATH_index] = row[TAG_PATH_index].replace(Trending.ignitionName,'/') #append the row to the list newPenData.append(newRow) #create dataset from list and assign to dataset data = system.dataset.toDataSet(headers, newPenData) if data is not None: self.tagPens = data ``` This script comes back with an error on line 27 when I try and do the string replacement with the pre-defined global string. It's acting like the global variable doesn't exist, even though it auto-completes ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/8/1849ef890f5e563a0f57a37606ed5631ef575194.png) ```auto Traceback (most recent call last): File "", line 1, in File "", line 7, in updatePaths File "", line 27, in historyPathConvert_MasterToEdge AttributeError: 'com.inductiveautomation.ignition.common.script.Pro' object has no attribute 'ignitionName' at org.python.core.Py.AttributeError(Py.java:178) at org.python.core.PyObject.noAttributeError(PyObject.java:965) at org.python.core.PyObject. __getattr__ (PyObject.java:959) at org.python.pycode._pyx292.historyPathConvert_MasterToEdge$1(:35) at org.python.pycode._pyx292.call_function() at org.python.core.PyTableCode.call(PyTableCode.java:173) at org.python.core.PyBaseCode.call(PyBaseCode.java:134) at org.python.core.PyFunction. __call__ (PyFunction.java:416) at org.python.pycode._pyx294.updatePaths$1(:7) at org.python.pycode._pyx294.call_function() at org.python.core.PyTableCode.call(PyTableCode.java:173) at org.python.core.PyBaseCode.call(PyBaseCode.java:134) at org.python.core.PyFunction. __call__ (PyFunction.java:416) at org.python.core.PyMethod. __call__ (PyMethod.java:126) at org.python.pycode._pyx293.f$0(:1) at org.python.pycode._pyx293.call_function() at org.python.core.PyTableCode.call(PyTableCode.java:173) at org.python.core.PyCode.call(PyCode.java:18) at org.python.core.Py.runCode(Py.java:1687) at com.inductiveautomation.ignition.common.script.ScriptManager.runCode(ScriptManager.java:803) at com.inductiveautomation.factorypmi.application.binding.action.ActionAdapter.runActions(ActionAdapter.java:207) at com.inductiveautomation.factorypmi.application.binding.action.ActionAdapter.invoke(ActionAdapter.java:300) at com.inductiveautomation.factorypmi.application.binding.action.RelayInvocationHandler.invoke(RelayInvocationHandler.java:57) at com.sun.proxy.$Proxy52.actionPerformed(Unknown Source) at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source) at java.desktop/javax.swing.plaf.basic.BasicButtonListener.focusLost(Unknown Source) at java.desktop/java.awt.AWTEventMulticaster.focusLost(Unknown Source) at java.desktop/java.awt.AWTEventMulticaster.focusLost(Unknown Source) at java.desktop/java.awt.Component.processFocusEvent(Unknown Source) at java.desktop/java.awt.Component.processEvent(Unknown Source) at java.desktop/java.awt.Container.processEvent(Unknown Source) at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.Component.dispatchEvent(Unknown Source) at java.desktop/java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source) at java.desktop/java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source) at java.desktop/java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source) at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.Component.dispatchEvent(Unknown Source) at java.desktop/java.awt.KeyboardFocusManager.dispatchAndCatchException(Unknown Source) at java.desktop/java.awt.KeyboardFocusManager.processCurrentLightweightRequests(Unknown Source) at java.desktop/java.awt.KeyboardFocusManager$4.run(Unknown Source) at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.desktop/java.awt.EventQueue$4.run(Unknown Source) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.desktop/java.awt.EventDispatchThread.run(Unknown Source) Ignition v8.1.27 (b2023042509) Java: Azul Systems, Inc. 11.0.18 ``` What am I missing? ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [January 10, 2024, 5:59pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061/2 "2024-01-10T17:59:38Z")
Why are you referring to it as `Trending.ignitionName` in your script if it's locally defined? Just remove the qualification, and refer to it as `ignitionName`? ---
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [January 10, 2024, 5:59pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061/3 "2024-01-10T17:59:49Z")
Same error. Just doing it for verbosity ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [January 10, 2024, 6:02pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061/4 "2024-01-10T18:02:03Z")
Indentation? Posted here it's all indented with spaces, but is that actually how it's all formatted in your file? You can right click and 'Show Whitespace', or paste it into a good external code editor. ---
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [January 10, 2024, 6:15pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061/5 "2024-01-10T18:15:28Z")
![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/f/4f4600feddac7dd2bfc1462a674f4d872e8c23f9.png) ---
**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\ **Post date:** [January 10, 2024, 6:30pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061/6 "2024-01-10T18:30:31Z")
I don't really know what's going wrong. It works on a test 8.1.35 system, using a mock object for `self`: ```auto class TestObject(object): def __init__ (self): self.tagPens = system.dataset.toDataSet(['TAG_PATH'], [["/ignition-desktop-av4v6h5:abc"], ["def"]]) self.edge = True t = TestObject() Trending.historyPathConvert_MasterToEdge(t) pds = system.dataset.toPyDataSet(t.tagPens) for row in pds: for col in row: print col ``` Restart your designer, restart your gateway? Not very satisfying answers... ---
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [January 10, 2024, 7:06pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061/7 "2024-01-10T19:06:30Z")
Doesn't make sense to me either since I have other project scripts with global variables that are working ---
**Author:** ![amarks](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/amarks/32/45610_2.png) [@amarks](https://forum.inductiveautomation.com/u/amarks)\ **Post date:** [January 10, 2024, 7:18pm UTC](https://forum.inductiveautomation.com/t/global-variable-project-script-object-has-no-attribute/84061/8 "2024-01-10T19:18:16Z")
Restarted designer and gateway. Not sure which one of those 2 did the trick, but it's working now.