vbNewLine creates questions mark in box

[yawnzzzz]

I have a macro that I'm trying to make do the equivalent of hitting alt+enter, so that I can create a list within a cell.

When I use:

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It creates the newline, but on the previous line it shows a question mark in a box.

If I use alt+enter this doesn't happen. Any ideas? I've tried switching the field to text, but that doesn't work.

[snb]

what happens with

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[yawnzzzz]

That works. Thanks!