[5e OGL] Adding die rolls to the Mod box of tools

Hi everyone, I am trying to represent a 1d4 bonus to a skill use by adding something to the Mod box of a custom tool I have added to a 5e OGL character sheet. I am pretty much fumbling about having tried various things (including 1d4 /roll 1d4 @1d4 @{1d4} and @{/roll 1d4}) to no effect. Does anyone know if it is possible to add a 1d4 roll to a Tool Use (and if so, how) perchance?

I just tried d4 in the mods for a tool and it worked. It messes with the text coloring of the results based on just that d4 though (the result is colored red on a 1 for the d4 and green on a 4, regardless of the d20 roll). You could instead create a global skill modifier that you only toggle on when you roll that tool.

Side note, to avoid that die coloring based on the 1d4, you can enter it as: 1d4cs0cf0 Or, if you want to always know that such a roll has been added, you could force it to be blue: 1d4cs>1cf>1

Thanks, that was useful. I am seeing that if I add it to a tool that was already on the sheet (added using Charactermancer) then that works (both 1d4 and d4 seem to work), however if I add it to a tool that I manually add to the sheet it doesn't seem to work. Is it just my sheet that as somehow become corrupted or are you seeing that too?

One more piece of information (on the off-chance its' useful to someone) - it appears to be related to whether the tool uses query or a characteristic. If you use Query then adding d4 etc. works fine, if you choose a specific characterstic (e.g. Strength or Dexterity) it seems to ignore whatever is in the mod box. Either way, now I understand this my specific problem is solved, thanks for the responses.