Params dictionary being filled with null values instead of actual values

[stkgo]

I have a basic test case that looks like the following (I apologize for the screenshot, GitHub's markdown editor gets confused by the Nextflow script block in the when block):

That param ends up being null when my Nextflow process executes. I am confused as to why this is happening. I have written other test cases where I update the params dictionary and haven't had any issues.