gated two edge counter -200452 error

Hello Forum,

                         As I wrote earlier, I am trying to implement a two edge separation measurement that could be gated. In an updated version of an earlier program, I tried to use the pause trigger property node. However, I can't get it to work and keep recieving a -200452 error. Can anybody at least explain what is wrong the program (attached).

Regards,

                 RL