I have been working with ModelBuilder and I am having trouble placing a precondition on an input parameter. However, I may be going about it in the wrong way and may just need a Python script.
My example will be based off of the 'Strip Map Index Features' tool (Cartography Tools --> Data Driven Pages --> SMIF) in ArcMap. When running the tool, the GUI shows a checkbox (Use Page Unit and Scale). There is also another parameter/textbox (Map Scale). The 'Map Scale' text box only becomes active or enabled when the checkbox is checked.
I am trying to recreate this functionality using ModelBuilder and I am not sure how to do so.