I want to achieve cascade select in a table.
There are two dropdown in the table row.
The selected value of the first dropdown will be the input variable of second dropdown's query.
e.g. The first dropdown is country list. The second dropdown is city list.
In second dropdown:
I know it is able to pass the variable with the "Report/Plug-in Variables".
I know it is able to use the "_val" to get the current dropdown value.
But how to get the first dropdown value?