Check if a Variable (New Views) is null Hello Community,how can I check if a variable from the new views is NULL? My challenge is to not use an filter in a PU_FUNCTION when the variable is empty.Variable: VAR_CONDITION_FILTERExample Value with multiple selection: ‘Y001’, ‘Y020’, ‘Y300’I want to use the variable in a PU_SUM Filter statement like in this way.PU_SUM("VTTK", "FREIGHT"."FREIGHT_CONVERTED", CASE WHEN '${var_condition_filter}' IS NOT NULL THEN "FREIGHT"."CONDITION" IN (${var_condition_filter}) END )But this don’t work. Error:A PQL error is preventing this query from executing.Syntax error near [IN] after reading [PU_SUM("VTTK", "FREIGHT"."FREIGHT_CONVERTED", CASE WHEN '${var_conditon_filter}' IS NOT NULL THEN "FREIGHT"."CONDITION" ] at line 9. Please refer to PQL documentation for available syntax. This here works, but I need the check if the variable is empty to avoid errors and to avoid that users ha