Locked out of RV

Is it a Trimark latch? If so it is either the latch itself that broke, it is made from a cast Zinc alloy that is very weak, or the plastic cam that operates the latch broke. I have had both issues. After buying the second door assy I was not going to buy a 3rd one. I was able to slide the drivers side window open using the palm of my hand, there is no handle on the outside windows. I climbed through the window which was a chore. Once inside you can remove the screws holding the two parts of the door assy together and the door will open. I fixed mine by adding a thin steel plate to join the broken door latch pieces together. That was about 4 years ago and it is still working well. The replacement latch is about $100 someone on hear posted that Trimark now sells a replacement latch made from steel for about $200, if you don't want to modify it yourself.