How to increase / decrease a counter setpoint using the LOGO TDE F1 / F2 function keys?

I am setting up a program and I would like to use the F1 / F2 function keys to adjust the setpoint value of the parts counter by the LOGO TDE HMI, is this possible?
I can only use the keys to change a counter that serves as a setpoint for the time counter, but only the counter directly I cannot. In the TDE configuration screen, I try to configure so that the counter is increased by the function keys, but nothing that I have tried, has worked.
What I managed to do is leave the counter on the screen and use the ESC key and after 2 seconds select the counter space and thus patiently change the preset value, after pressing ENTER to confirm. I would like something faster using just the function keys. Could you say if it is possible, and if so, how? If possible, could you send an example?

thankful.

ixo65

In attachment a possible solution.

Attached an example which I think should give you a good start to proceed?

This combined with the program from Ixo should do the trick?

Luna08

Attached an example which I think should give you a good start to proceed?

This combines with the program from Ixo should do the trick?

Yesss. This is what I was looking for. 
But now I had another question? To download it in LOGO, 
I had to add an analog output block in B005, 
otherwise it fails. My logo has no analog output, 
but I am using all digital outputs. Was there a problem?

See how it was attached.

​

Sorry, my mistake. 
I should have added an analog flag.

See attachment. 

Luna08

Sorry, my mistake. 
I should have added an analog flag.

See attachment. 

 IT'S OK. Exactly what I was looking for.

I really appreciate the help and the other friends.