Add Custom Column dialog box

[Anonymous]

Is there any way to increase the size of the "Add Custom Column" dialog box? The Custom column formula box is just too small and inflexible (no formatting, etc) for longer formulas.

[Anonymous · Accepted solution]

You might want to construct that column in M in the Advanced Editor dialog.

You could also use the Power Query SDK in Visual Studio to test the data, and then copy/paste the function back into the Advanced Editor if you really want a better M workspace with syntax highlighting and autocomplete (Or even make a custom data connector!).

[Anonymous]

I will definitely give that a try. Thanks!