My code returns no errors but seems to be skipping a line

Hi all, I've got the following code:

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as part of a for/next loop that calls on a function repeatedly. The only thing is that the whole If/Then section of the code gets skipped starting at

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Meaning that I'm probably not setting the results of the function well as the variable Altura

The code for the function is below.

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Any pointers as to what I'm doing wrong here? It almost definitely has something to do with either the variable or the result of the function being an error.

Hi Kaper, thanks for the reply. Sorry for never noticing, I thought this thread had just been abandoned.

Thanks for the tip on the locals window, that's a function that I never knew existed. I think I figured out what happened. I'm not setting the range variable correctly. When I try it tells me that no cells were found, so it seems to be happening in this area before even calling the function, which I neglected to include before in the name of simplicity.

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Any idea what might be wrong here?
Incidentally Seguimiento is a Worksheet variable.

Yeah, I ended up replacing it with something that doesn't use selections. That part works now. Thanks for the help!