Ability Drain API help

Hello, I mainly use Powercards,scriptcards,chatsetattr and Token mod. I know its possible, but what would the command be for TokenMod or Script Cards to set or change a attribute? For example, a player is hit with an Dex drain attack. Is there a macro I could create utilizing API to provide a chat prompt of what the attribute would be changed to? (Example: 15 dex, hit with -3 to dex, change it to 13 via a macro).  Any help is greatly appriciated :)

I think for something like that, you would be looking at ChatSetAttr, which is for creating or changing attributes on a character sheet.  I admit that I don't know the capabilities of the Script Cards though, so it may work without ChatSetAttr.

TokenMod can only change elements on a token, not attributes on the character sheet itself. (Unless you have an attribute linked to a bar, you can use TokenMod to update the bar, which will then update the attribute). You can use ChatSetAttr to change attributes on a character sheet. The macro would be something like: !setattr --sel --silent --mod --dexterity|-3 /w gm Dexterity is now @{selected|dexterity}. You didn't say what game and character sheet you are using, so I'm just guessing that 'dexterity' is the name of the attribute. You can remove --silent if you want the script output of the change.

Thank you all for your replies, it was D&D 5e Ogl, but I think Jarren K solved it. I'll check on it tomorrow. Thank you all again!