Vigor2820n

Does anyone know how to correctly setup line filters?
I have the draytek setup with 2 broadband lines connected, I want to be able to tell the draytek to only use 1 particular line for GOTOMYPC but how do i set this up?
Currently GOTOMYPC does not work correctly, because it is getting confused between the two available broadbands??

Thanks in advance,
CSTN

create a load balance rule for the ip address of the PC and tie it to one WAN link.