Custom tool param is nil?

[neckro23]

Hi, I'm having some real basic problems with a CustomToolParam for my plasma cutter. I'm trying to define an offset to my touchoff probe value, because it can be off by a bit depending on the tool. I'm writing a custom post for this.

At the top of the post I have this:

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    post.DefineCustomToolParam("PlasmaTool", "Probe offset", "probeOffset", sc.unitLINEAR, 0, -20, 20)

Later on my code, in OnPenDown():

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    post.NonModalNumber("G92 Z", -probeOffset * scale, format)

Yet when I run the post, I get:

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The post has thrown an error:
... attempt to perform arithmetic on global 'probeOffset' (a nil value)

What's going on here? How do I define this as a tool parameter? I've noticed that some of the built-in post-processors do the post.DefineCustomToolParam thing twice, but I'm not sure why. The post documentation (which is extremely vague, btw) offers no insight into this.

[Les Newell]

Try restarting SheetCam. DefineCustomToolParam can sometimes need a restart of SheetCam before it starts working.

[neckro23]

Try restarting SheetCam. DefineCustomToolParam can sometimes need a restart of SheetCam before it starts working.

Ugh, it turns out this was the case. SheetCam gave every indication that it was parsing the post properly and added the params in the tools, but apparently requires a restart before it will actually work. Very frustrating.