Create a non-persistent entity named FiltersHelper and add an attribute of enumeration type to this entity, which will be used for filtering. When opening the page with a microflow, create a FiltersHelper instance, which you will use; you can assign it to the session and implement a GetOrCreate pattern. Utilize the FiltersHelper for filtering, and set the data grid data source as a microflow where you pass the parameter of the non-persistent entity, indicating the selected value from the dropdown. Then, you can create a variable using getCaption, which you will compare in the retrieve action in XPath.
Try creating an ENUM Variable with getCaption before and using that in the Retrieve.
Hi Rafael ,
Before retrieve action you can create string variable as follow : getCaption($Dropdown_Context/Title) and use this variable in the retrieve action.