Change Label (ex. Green to red) when card is linked to another card?

[christina]

Hi,

I try to use cards with staff names (staff are members on that specific card with their name on) and link that "staff card" to a project card.

I use green label on the staff card for "available" and red labels for "unavailable"

I would love if that label changed automatically when I link a staff card to a project card. 

is that possible ? and how? :) 

 Christina 

[milynnus · Accepted solution]

@christina  have you tried this when an attachment starting with "https://trello.com/c/" is added to card ...then your remove the available label and add the unavailable label? The assumption is that all cardlink attachments will be a project card.

[rax adaam]

further to this, if not all attachments will be project cards, you could create a "project card" label so that the rule only triggers when an attachment with the appropriate label is added. 

[Iain Dooley]

@christina let me see if I understand this correctly:

You have a card "Project A" and you have a staff card "Staff Member A".

You have a red label on "Staff Member A" and you want a command that does this:

When I add a link to "Staff Member A" to card "Project A" I want the red label removed from "Staff Member A" and the green label added to "Staff Member A"

Is that correct?