Issue with mapping Multiple entries Input parameter in graphical calculation view.

[pooja_patil1]

Hi All,

I am working on a requirement similar to having selection screen with Country, Region and City fields with value help. Value help for Region should populate based on the Country that user selects and similarly value help for City should populate based on Region that user selects.
So for this, I created 3 input parameters in target graphical Calculation view and below 3 graphical calculation views for value help.
First one is value help view for Country which is projecting countries from one of the table column.
Second one for Region with filter on Country column which will use Country entered by user in selection screen and then return Regions of that Country.
Third one for City with filter on Region column which will use Regions selected by user and return Cities of those regions.
These 3 value help views and the required columns from them are used in the input parameters Country, Region and City in the target graphical calculation view. And the input parameters from value help used for filtering there are mapped with the target view input parameters using option "Views for value help for variables/input parameters".

This mapping works absolutely fine till the input parameters are set to have only one value(Multiple entries checkbox deselected) and populates value help from the value help views correctly in the selection screen.

But as soon as the input parameters are set to have multiple values from user(Multiple entries selected), it does not return value help and gives error "Instantiation of calculation model failed" in the value help window.

Tried even setting the filter like below by removing single quote from the input parameter but still not working:
in("field_name",$$input_parameter$$)

Can someone please help with explaining what is missing here.

Thankyou