Option: Reset product string before application of settings

This option, introduced in version 1.0.23 is provided to handle scenarios where previoulsy set product string values (from a prior use of this extension) are retained and seen in subsequent calls of Set Variables action. In many scenarios this retention is desired as it allows your to build a complex product string by layering the results of several "Set Variables" invocations. At times though, this behavior is not desired and you may want to start fresh from a clean product string. Selecting this checkbox will ensure that no prior product string values are retained.