Problem with getting the right filter to push from Zapier only when custom field is updated

I’m using Zapier to send Asana data to another third party time-tracking app (Toggl). I want it to only push a task across to Toggl when a custom field is updated - i.e. when custom multiselect field ‘Toggl’ = ‘Send’.

I have messed around with all sorts of conditional filters in Zapier, but the closest I’ve gotten is it sends it across anytime there is any change on a task that has Toggl=Send on it.

Would appreciate some help in getting the conditions correct to send the task to Toggl only once when the action is perform to set Toggl=Send.

Screenshot is of just my current attempt - I’ve tried a ton of others also, to no avail.

TIA!