How to delete/create/change waypoint position?

[SGJackson 11]

I've already found a post about this: http://forums.bistudio.com/showthread.php?t=93791&highlight=SetWPPos

Sadly, It doesn't explain nothing... Now, i'm making a mission -but that's another story- now there's a part where you've got to go get a truck, the russians invade your "wife" calls you by radio and then you have to move to a nearby village... Now the thing is that you WON'T get the "Truck" waypoint to be acomplished (i've made it impossible to...) so i need that that waypoint dissapears or change positions or set a new waypoint... Now, i've checked ALL OF THIS COMMANDS: http://community.bistudio.com/wiki/Category:Command_Group:_Waypoints no, they didn't work...

Best Regards, SGJackson!