Zapier integration returns error

I've tested the beta version of Zapier. I wanted a new post in the forum to be added to a DaPulse board. Zapier says: "Required field "Pulse Name" (pulse__name) is missing."

The first test works fine, but when I add a new topic in the forum after the test is done I get the reply above. I have used the UserEcho field "Header" to be used when creating a "Pulse name".

Any suggestions?