Automations and lookup field issues

[Ana_Karina_Sant]

I’m setting an automation to send a slack message using a lookup field (formatted as string).
The automation doesn’t get the value from this lookup field. I get an error message saying “This property cannot be used right now” Has anyone hit the same issue or has something to add to help?

[Steve_Haysom]

It seems to working now. The run test button was appearing grayed out, now it’s working ok and the emails are being sent. thanks for the help.