BGE Camera animation (BlendIn) doesn't work

Artwork Animations
1

the BlendIn isn’t working:
here is the script:

  • Own = Camera

import bge
from bge import logic as g, events

def main():

cont = g.getCurrentController()
own = cont.owner
scene = g.getCurrentScene() 
k = g.keyboard.events

action = cont.actuators['Action']

if k[events.WKEY]:
    
    action.mode = bge.logic.KX_ACTIONACT_LOOPSTOP
    action.action = 'MoveCycle'
    action.frameStart = 0
    action.frameEnd = 60
    action.useContinue = True
    action.blendIn = 10
    
    cont.activate(action)

else:
    
    action.action = 'Nothing'
    action.frameStart = 0
    action.frameEnd = 60
    action.blendIn = 10
    
    cont.activate(action)