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This drop down contains a list of Configuration Variables. If you want to create a Configuration variable, see Configuration Variables.Variables.
Note: When a variable is set during a build, it is copied from the Configuration variables namespace and stored in Build variable namespace. This means you can still reference the variable's original value by using %Configuration.MyVariable%. Otherwise, to use the updated value, simply reference the variable by its name %MyVariable%.
Operation
You can choose to replace a variable's value or append/increment it. If you choose to append/increment then it takes in the value type of the variable. For text/expression type variables the new value will be appended to the old value. For numeric variable values the old value will be incremented by the new value.
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