Sorry for not explain clearly, what actually happening is when E(TY) and F(LY) is not equal 6 then it should be NULL. Same as column B(TY) and C(LY) if E(TY) not equal 6 then B(TY) is NULL, if C(LY) not equal 6 then C(LY) is NULL.
So in my scenario for E(TY) column structure should be,
=If (([E(TY)]<>6);NULL)
For Column B(TY) should be,
v_CY =If([E(TY)]<>6;NULL) is it correct???