How To Enter Expressions in the Expression Editor

Expressions are useful if you do not know an exact value at design time and instead need to enter a formula that can be evaluated at run time.

Note	The resulting type of expression must match the expected input type or types (which you check at design time).

In the Expression Editor window, you can enter or edit an expression in the Value input text box and you can use theAll Variables selection box to get quick access to a variable you have previously defined in the script to paste it into the expression.

When you choose a variable from the All Variables selection box, the variable name appears in the Value input text box.

After you enter the expression, click OK and the Expression Editor closes.