Simple debugger problem...
Hi,
There is a small problem in the memory view, where the debugger tries to read past the end of the existing memory (which is the case as your stack is at the end of the chip internal SRAM), thus getting an access error and not updating the memory view. We are currently working on a solution, that will be available in a coming update.
In the meantime you could, instead of using the memory view, you could create a watch to check that the variable is correctly updated, possibly accessing the variable by *(int*)0x20003ff3
Hops this helps,
Bernard