Marekuk

Hi I accidentally snapped the key on the front door. I have a spare key, so i would just like to get the other half of the key out of the door, and unfortunately it is still stuck in the door. It is a WMS key on a lock, and i have no experience with locks, so do not know the first place to start. All i have tried at the moment is trying to push the key out with the spare key, but that didnt work. I would greatly appreciate any tips that would allow me to avoid calling a locksmith out. (I can insert the other half of the key in from the inside and lock the door, but cannot insert a key from the