How can I set slot value by using SlotSet()

hey guys, I have created a slot called “TOTAL”. I try to set a value to “TOTAL” using a custom action as shown below: slotset

However, run the shell with debug mode, the slot “TOTAL” remains unchanged: slot

I got no errors, no exceptions. Everything is working, but i just can not set a value to the slot"TOTAL"!

Can you provide the debug log from both rasa & the action server during the dialog associated with the slot.