Hi,
In the case we have a multi select combo box attribute like this :
![](https://uploads-us-west-2.insided.com/acumatica-en/attachment/06a8d02a-dbc2-4c1a-a3aa-816026e30c11.png)
I want to isolate a specific value of the combo box like the last one (ValueID=Complété).
For this, i put a formula in the GI and I get this error message(Picture Below).
=IIF(INSTR([FSServiceOrder.DOCUMENTS_Attributes],'Complété')=1,True,False)
I putted a Schema Field “FSAppointment.Completed”
![](https://uploads-us-west-2.insided.com/acumatica-en/attachment/2ccee2da-1481-402b-a5f7-71df1308b42d.png)
Do you have an idea how to resolve this?
Thanks!
Best answer by dcomerford
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