Hi Sai,
you may not use the same variable within one query, but you can use them in several queries separately.
If you use the same variable separatly in different queries - once for char and once for navi, you will still get the error message, but you can ignore it.
If you need exactly the same restriction within one query - then use the variable for the char and create a new variable for the navi, type replacement path and replace the value from your first variable.
regards
Cornelia
