Create a checklist in a different card

[Richard A]

I want to add a label to a card and then find a different card on a different list and add a checklist item in the second card using the description from the first card.  What would be the code to do this?  Thank you 

[Vongsawat]

Find and Lookup are your friends 

Both Find and Look up will search for your destination card, either by name or by link. Find will set it to the Current Card, whilst Lookup will keep the Current Card as is (but allows you to access Variables in the found card) 

So in your case, you'd apply a label then Find the destination card to be able to work on it.

But because you'd want to access data on the starting card, you'd have to Lookup the start card. In this case, because it was the card that triggered the rule, you'd use {triggercardlink} and Lookup by link.

Then to use the description of the found card, use {foundcarddescription} when you add the checklist item. I think you'd have to use the whole description in this case though.

Hope that helps. Here're some other Butler reference pages for future use: Wildcards and Custom-Fields ;)