How to trigger reference qualifier of "List Collector" variable when another reference variable value changed in catalog formIssue If you have a reference variable called "Department" on a catalog item, then you have a "List collector" variable called "Users" which has an advanced reference qualifier set with the variable "Department" so that the script include call is made to get the employees which are matching with the selected department. When the user selects "Department" on a catalog item, it doesn't filter the values populated in the "Users" List collector variable as per the selected department as shown in this screenshot: CauseThe List collector values are populated only at onload time and when the user performs a filtering action manually, it is not repopulated when the referenced variable value is modified by the user like in the reference variable. Due to this list collector behavior, on the catalog form, the "Users" List collector variables are not loaded with expected values when the department was selected.ResolutionYou can work around the above-described limitation of List Collector by adding the variable attribute ref_qual_elements=<name of dependent reference variable, for example, department as in the above-mentioned scenario> on the list collector variables.Related LinksService Catalog variable attributeService Catalog variables