problem with ignoring modules

I need to not include a module file. I initially set IgnoredModules = @("HookExitLibrary") in my package file but that threw an error as it created an array of objcts and not strings so I chnaged it to IgnoredModules = [string[]] "HookExitLibrary.psm1" both with and with out the .psm1 on but in both cases it included the function from that module library.

How do I configure it to not include functions from a specific module ?

I am using 4.9.0 of the tool with VS Code