Mapping nulls into string table

Hope someone should have solved this problem.
When we have a variable in input and we need to map it to a string table.
In the sting table I am using %/variable%

Now when the value is null, the string “%/variable%” is getting passed.

I want it to be null when it is null.

Thanks in advance,

You could try putting a Branch on the variable, such as:

Branch on %/variable% (eval. labels is set to false)
$null:set the var to ‘null’ in the table
$default:map the variable accross

Hope this helps,