https://forums.autodesk.com/t5/flexsim-forum/property-value-accessed-on-invalid-node-error/m-p/13751662#M97460 <P>Hi&nbsp;</P><P>When I run my model it is appeared an exception that property “value” &nbsp;accessed on invalid node but I checked my labels many times ,I don’t know where is the problem . Please guide &nbsp;me.</P> Thu, 07 Aug 2025 09:08:16 GMT mkhorsandi64 2025-08-07T09:08:16Z https://forums.autodesk.com/t5/flexsim-forum/property-value-accessed-on-invalid-node-error/m-p/13751662#M97460 <P>Hi&nbsp;</P><P>When I run my model it is appeared an exception that property “value” &nbsp;accessed on invalid node but I checked my labels many times ,I don’t know where is the problem . Please guide &nbsp;me.</P> Thu, 07 Aug 2025 09:08:16 GMT https://forums.autodesk.com/t5/flexsim-forum/property-value-accessed-on-invalid-node-error/m-p/13751662#M97460 mkhorsandi64 2025-08-07T09:08:16Z https://forums.autodesk.com/t5/flexsim-forum/property-value-accessed-on-invalid-node-error/m-p/13751785#M97462 <P>Wherever you have found “&gt;.” as string path reference for a starting point for a label this is not the metric for this.&nbsp;</P><P>This is probably causing this error.&nbsp;<BR />You get access to a label for example by <A href="https://docs.flexsim.com/en/25.2/Reference/CodingInFlexSim/FlexScriptAPIReference/Tree/treenode.html#Property-labelProperties" target="_blank" rel="noopener">obj.labelname</A> or obj.labels[“labelname”] or obj.<A href="https://docs.flexsim.com/en/25.2/Reference/CodingInFlexSim/FlexScriptAPIReference/Tree/Object.html#Property-attrs" target="_blank" rel="noopener">attrs</A>.<A href="https://docs.flexsim.com/en/25.2/Reference/CodingInFlexSim/FlexScriptAPIReference/Tree/treenode.html#Property-labels" target="_blank" rel="noopener">lables</A>.<A href="https://docs.flexsim.com/en/25.2/Reference/CodingInFlexSim/FlexScriptAPIReference/Tree/treenode.html#Property-subnodes" target="_blank" rel="noopener">subnodes</A>[“labelname”]<BR />obj is in this case for example current.&nbsp;<BR />Please refer to the manual and do not assume something. The command node has been replaced by method <A href="https://docs.flexsim.com/en/25.2/Reference/CodingInFlexSim/FlexScriptAPIReference/Tree/treenode.html#Method-find" target="_blank" rel="noopener">find</A>.&nbsp;</P> Sun, 03 Aug 2025 18:35:57 GMT https://forums.autodesk.com/t5/flexsim-forum/property-value-accessed-on-invalid-node-error/m-p/13751785#M97462 joerg_vogel_HsH 2025-08-03T18:35:57Z