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Understanding FileMaker Script Dependencies

FileMaker scripts rarely run in isolation. Most call sub-scripts, set globals, or trigger layout events. Understanding those dependencies is essential before changing anything.

What counts as a dependency?

Direct sub-script calls are the obvious ones, but layout triggers, custom function usage, and shared globals all create coupling between scripts.

Why dependencies hide

FileMaker doesn't surface a global call graph by default. Dependencies are scattered across the DDR, you have to assemble them yourself.

Mapping dependencies quickly

A visual script flow tool can render parent and sub-script relationships in seconds. This is far faster than searching the DDR by hand.

Using the map to plan changes

Once you can see the dependency graph, change planning becomes concrete: you know exactly which scripts to test after a modification.