On Unit reach destination

Ive been trying to put in an on unit reach destination event in my RTS game I have it implemented to set a build point for a worker and it builds the buildings. The only problem right now is that as soon as i set the build point the unit goes to the location and the building builds at the same time theres no waiting. I have applied the WDTC Mod had to remove a few lines of code for the RTSUnitTypeName = villager because it was giving me horrible errors, but aside from that all variables are the same.