vinyl window tilt latch

Not sure of the window manufacturer, they were installed when I bought the house long ago. Am having trouble finding tilt latches that work with it. Do you have any that would work? The problem seems to be how they snap into place. See the side shot. Can't find any that have a similar mechanism.

Here is a photo of the top. I bought one similar to what you suggested but it did not work. The second photo shows it and the original next to each other. The original has two tabs circled that are what clips the latch in place on the window. The other has this ridge right below the top that must slide into a window notch, I suppose. My window does not have a notch for that ridge to slide into. It won't fit even slide into the space. I believe I need to find one without the ridge and with the tabs that snap the latch into place.