values on the bases of selecting filter

[capriconuser]

there is a file Type 

there is 2 types in that field 

- Re

-Co

I drag this field in filter . now i want when i select value Co then only the bases of that value i want to change figures in table .. in table expression is this 

=$(vCost)

so how i modify according to when i select Co then Vcost should be changed otherwise not.. other wise when any value selection value should not be changed 

[avinashelite]

You could define the variable like 

vCost = if(GetFieldSelections(Type)='Co',1,0) 

then play with the expression you want