whb04b-4 pendant

Hello, I am trying different things with the configurations of my whb04b-4 pendant and for example I would like to move my Z axis to 10 and W axis to 20 when I press the macro-10 button, so for that I wrote the following Gcode command on the ini file: MDI_COMMAND= G1 Z10 W20 F4000. But when I try it I get the bad number format(conversion failed) parsing.. error.
Can someone help me out?
And also can someone tell me how to configure the ''fn'' button?
I am putting my machine's ini and hal files and also the pendant's hal file below.
Thank you

Just in case you use release 2.8.0 , comments must be on separate line. I would fix this first.

For example, lines like this will no longer be accepted:
MAX_VELOCITY = 7.5 # This is the max velocity of the axis.

Why is Z and W going +direction? No happy end if your CAM insert this pretty common line, G0 G53 Z0 W0

Thank you, it worked once I moved the comments! But may I know why I have to press multiple times on the button to get to the postion with this command MDI_COMMAND= G1 Z10 W20 F4000 ?
Is there a way to go to Z10 W20 at a single press of the button?