Can't get wait Bot to work -> Stuck in Pending

Hi guys,

i need to create a Bot with a wait process step, but i can't get it to work.
The Bot stays in PENDING forever.

Here is what i did:

table tasks has a column called "duration" with for example "00:06:00" (6 Minutes) in it.

My Bot is configured like this:

When this EVENT occurs:

Data Updates in "tasks"
Condition: AND([status] = "erledigt",ISNOTBLANK([Ofen Zyklus]))
Bypass Security Filters?: true

Steps: