ABB PLC speed control

how do I set up a bit so my main PLC can control the robot speed percentage via group input data? I am simply adding a line at the beginning of each routine to check this GI but it won't take.

i have tried: Velset GI_Speed_ovd, 1000;

it doesn't like that i used a GI instead of a number or register there

and: Speedrefresh GI_Speed_ovd;

same issue

this is the code I'm using in my program. I can get it to populate the nSpeed variable but it does not change the speed.

nSpeed:=GInput(GI_Speed_ovd);
SpeedRefresh nSpeed;

i also tried using Velset command:

nSpeed:=GInput(GI_Speed_ovd);
Velset nSpeed, 2000;

neither work to update the speed the robot is currently executing at. could it simply be that this command will only work with the robot in auto mode or am i doing something wrong?

i have verified that nSpeed is changing as i change the GI. So the percentage shown on the TP is not necessarily the current speed set? is there a way to get feedback from the controller to verify what speed its set to then? how can i verify that the speed changed?

that did work, it changed the speed the robot was running at but didn't change the display. It seems a little unsafe in my opinion to have the robot behaving different than the TP is displaying but i guess there isnt much that can be done about that. thank you for your help.