# Script window fails to open after adding dynamic property **URL:** \ **Category:** Ignition\ **Created:** [September 29, 2016, 9:52pm UTC](https://forum.inductiveautomation.com/t/script-window-fails-to-open-after-adding-dynamic-property/12189 "2016-09-29T21:52:08Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![fledder](https://avatars.discourse-cdn.com/v4/letter/f/e19b73/32.png) [@fledder](https://forum.inductiveautomation.com/u/fledder)\ **Post date:** [September 29, 2016, 9:52pm UTC](https://forum.inductiveautomation.com/t/script-window-fails-to-open-after-adding-dynamic-property/12189/1 "2016-09-29T21:52:08Z")
I am trying to add a dynamic property to an object. My code looks like this on a button referencing a paintable canvas: [code]canvas = event.source.parent.getComponent(‘Paintable Canvas’) props = canvas.getDynamicProps() props.put(‘Test property’, ‘Test value’) canvas.setDynamicProps(props) print (canvas.getDynamicProps().get(‘imgHeight’).value)[/code] When I go to preview mode and click the button, it seems to execute (I get output in the console), but my designer loses the ability to open script functions. When I try and re-open the script to change something, I get the following error: [quote]Exception in thread “AWT-EventQueue-2” java.lang.ArrayStoreException: java.lang.String at java.util.AbstractCollection.toArray(Unknown Source) at com.inductiveautomation.factorypmi.application.binding.util.DynamicPropertyUtil.getProperties(DynamicPropertyUtil.java:51) at com.inductiveautomation.vision.api.client.components.model.AbstractVisionComponent.getProperties(AbstractVisionComponent.java:145) at com.inductiveautomation.factorypmi.application.binding.util.BindUtilities.getProperties(BindUtilities.java:489) at com.inductiveautomation.factorypmi.application.binding.util.BindUtilities.getAllProperties(BindUtilities.java:504) at com.inductiveautomation.factorypmi.designer.property.configurators.comptree.ComponentPropertyTreeModel.createPropertyChildren(ComponentPropertyTreeModel.java:94) at com.inductiveautomation.factorypmi.designer.property.configurators.comptree.ComponentPropertyTreeModel.access$000(ComponentPropertyTreeModel.java:35) at com.inductiveautomation.factorypmi.designer.property.configurators.comptree.ComponentPropertyTreeModel$ComponentNode.loadChildren(ComponentPropertyTreeModel.java:151) at com.inductiveautomation.ignition.client.util.gui.tree.AbstractLazyLoadingTreeNode.checkChildren(AbstractLazyLoadingTreeNode.java:28) at com.inductiveautomation.ignition.client.util.gui.tree.AbstractLazyLoadingTreeNode.getChildCount(AbstractLazyLoadingTreeNode.java:49) at javax.swing.tree.DefaultTreeModel.getChildCount(Unknown Source) at com.jidesoft.swing.TreeSearchable.populateTreePaths0(Unknown Source) at com.jidesoft.swing.TreeSearchable.populateTreePaths0(Unknown Source) at com.jidesoft.swing.TreeSearchable.populateTreePaths0(Unknown Source) at com.jidesoft.swing.TreeSearchable.populateTreePaths(Unknown Source) at com.jidesoft.swing.TreeSearchable.getTreePathes(Unknown Source) at com.jidesoft.swing.TreeSearchable.getElementCount(Unknown Source) at com.jidesoft.swing.Searchable.findFromCursor(Unknown Source) at com.jidesoft.swing.SearchableBar.initComponents(Unknown Source) at com.jidesoft.swing.SearchableBar.(Unknown Source) at com.jidesoft.swing.SearchableBar.(Unknown Source) at com.inductiveautomation.ignition.designer.gui.SearchUtility$CustomBar.(SearchUtility.java:87) at com.inductiveautomation.ignition.designer.gui.SearchUtility.install(SearchUtility.java:56) at com.inductiveautomation.ignition.designer.gui.SearchUtility.install(SearchUtility.java:52) at com.inductiveautomation.ignition.designer.gui.SearchUtility.install(SearchUtility.java:46) at com.inductiveautomation.factorypmi.designer.property.configurators.comptree.ComponentPropertyTreePanel.(ComponentPropertyTreePanel.java:72) at com.inductiveautomation.factorypmi.designer.eventhandling.PropertyDialog.(PropertyDialog.java:48) at com.inductiveautomation.factorypmi.designer.property.configurators.DBBrowserPanel$KeyPanel.(DBBrowserPanel.java:406) at com.inductiveautomation.factorypmi.designer.property.configurators.DBBrowserPanel.initComponents(DBBrowserPanel.java:95) at com.inductiveautomation.factorypmi.designer.property.configurators.DBBrowserPanel.(DBBrowserPanel.java:82) at com.inductiveautomation.factorypmi.designer.eventhandling.DBBrowserBuilder.initComponents(DBBrowserBuilder.java:93) at com.inductiveautomation.factorypmi.designer.eventhandling.DBBrowserBuilder.(DBBrowserBuilder.java:77) at com.inductiveautomation.factorypmi.designer.eventhandling.ActionConfigPanel.(ActionConfigPanel.java:66) at com.inductiveautomation.factorypmi.designer.eventhandling.ComponentScriptEditor.initComponents(ComponentScriptEditor.java:251) at com.inductiveautomation.factorypmi.designer.eventhandling.ComponentScriptEditor.(ComponentScriptEditor.java:132) at com.inductiveautomation.factorypmi.designer.eventhandling.ComponentScriptEditor.(ComponentScriptEditor.java:116) at com.inductiveautomation.factorypmi.designer.workspace.WindowWorkspace$Handler.configureEventHandlers(WindowWorkspace.java:2714) at com.inductiveautomation.factorypmi.designer.workspace.WindowWorkspace$Handler.configureEventHandlers(WindowWorkspace.java:2705) at com.inductiveautomation.factorypmi.designer.workspace.WindowWorkspace$Handler.handleConfigActions(WindowWorkspace.java:2700) at com.inductiveautomation.factorypmi.designer.workspace.WindowWorkspace$Handler.access$2000(WindowWorkspace.java:1984) at com.inductiveautomation.factorypmi.designer.workspace.WindowWorkspace$Handler$11.actionPerformed(WindowWorkspace.java:2156) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.setPressed(Unknown Source) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source) at com.jidesoft.plaf.basic.BasicJideButtonListener.mouseReleased(Unknown Source) at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source) at java.awt.Component.processMouseEvent(Unknown Source) at javax.swing.JComponent.processMouseEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source) at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$500(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) [/quote] I can’t open any scripting until I restart my designer. If I don’t try and put a new property in, commenting out the line that does so, like this: [code]canvas = event.source.parent.getComponent(‘Paintable Canvas’) props = canvas.getDynamicProps() #props.put(‘Test property’, ‘Test value’) canvas.setDynamicProps(props) print (canvas.getDynamicProps().get(‘imgHeight’).value)[/code] it will execute just fine and the designer keeps working as expected. While I’m sure there is an error in my code, it seems like it shouldn’t break the designer… ---
**Author:** ![fledder](https://avatars.discourse-cdn.com/v4/letter/f/e19b73/32.png) [@fledder](https://forum.inductiveautomation.com/u/fledder)\ **Post date:** [September 29, 2016, 10:01pm UTC](https://forum.inductiveautomation.com/t/script-window-fails-to-open-after-adding-dynamic-property/12189/2 "2016-09-29T22:01:10Z")
Seems the issue was because I was not providing the property as a com.inductiveautomation.factorypmi.application.binding.DynamicPropertyDescriptor. I figured out how to do so, but would still have liked to have seen an error message rather than not being able to open scripting windows. ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [September 30, 2016, 1:20am UTC](https://forum.inductiveautomation.com/t/script-window-fails-to-open-after-adding-dynamic-property/12189/3 "2016-09-30T01:20:18Z")
getDynamicProps() is not documented in the manual. It is visible only in the javadocs (or reflection), along with the signatures that shows its data types. It’s kinda’ like leaving the well-marked highway for some off-roading in your favorite 4x4. There aren’t signs for every rock and rut.