I don't know the specifics for your model, but it can't be too different to mine. I don't have vehicle specifications for this (I have looked, can't find 'em), but I've been told that the limits are:
Dynamic load limit (when vehicle is moving): 95kg
Static load limit (only when stationary): 300kg
It's a tradies platform, and they know we have to load up planks and boards and ladders and stuff up there.