topic Re: Access puller label from back orders of internal list in FlexSim Forum

Access puller label from back orders of internal list

esther_j2 — Tue, 09 Aug 2022 19:01:16 GMT

[ FlexSim 21.2.4 ]

Is it possible to access the label of a puller token that's sitting on the Back Orders of an internal list?

I know that with a global list, I can use a command such as: List("List1").backOrders()[1].puller.labelName

Is there an equivalent command for internal lists?

Thanks in advance!

Re: Access puller label from back orders of internal list

moehlmann_fe — Wed, 10 Aug 2022 06:36:52 GMT

You can read that information from the tree. The following code assumes a single (global) instance.

treenode backOrders = Model.find("/Tools/ProcessFlow/ProcessFlowName/List>stats/instances/ProcessFlow/list>variables/partitions/1/backOrders");
int typeLabelValue = getsdtvalue(backOrders.subnodes[1], "puller").as(Token).Type;

Note that the developers do not guarantee forward compatability when reading values directly from the tree like this, as the tree structure might change in future releases.

(The 'as.(Token)' isn't strictly necessary, but it makes accessing valid methods/properties for the puller token easier when writing the code (such as 'entryTime' for example).)

Re: Access puller label from back orders of internal list

esther_j2 — Wed, 10 Aug 2022 20:34:10 GMT

Thanks for the response! I'm not able to get the second line of the code to work. The error that gets returned is:

exception: FlexScript exception: <no path> c: <no path> i: <no path>

If it'll be helpful, this is what that section of the tree looks like:

Re: Access puller label from back orders of internal list

moehlmann_fe — Thu, 11 Aug 2022 05:59:34 GMT

The first mention of 'List' in the path in line 1 is the name of the list activity (forgot to mention that, sorry). Did you replace it with "List_Loc1" when testing the code? That could explain the error, because the "backOrders" node would be NULL.

Re: Access puller label from back orders of internal list

esther_j2 — Thu, 11 Aug 2022 13:33:58 GMT

Yes, I did replace it with "List_Loc1". The value I get back for the "backOrders" node is 0 (according to the Script Console output), but when I try to run the second line it gives the error described above.

Re: Access puller label from back orders of internal list

moehlmann_fe — Thu, 11 Aug 2022 13:46:52 GMT

"backOrders" should point to the respective node of the same name in the tree. Based on the section of the tree you posted the path should be correct. The only section I can't see is the ProcessFlow.

You could try to add steps to the path one by one and see at which point no valid treenode is returned.

Re: Access puller label from back orders of internal list

esther_j2 — Fri, 12 Aug 2022 20:09:11 GMT

Thank you! For some reason it works now, I'm not sure what I did differently...