Dear Sir I want calculation in analog Tag, if some conditional expressions is true. how i can write script ? ============================ Different tcl script example: set Sum variable if {[GETVAL B_N(4)]==1} then { set A [GETVAL Bv5] } else { set A 0 } if {[GETVAL B_N(5)]==1} then { set B [GETVAL Bv6] } else { set B 0 } SETVAL sum=[expr $A + $B] } ===================================