No problem as it happened in your sleep without you being responsible for this.

On one of the days while fasting “Sita Shawal” i slept after observing Solatul Subhi and had a wet dream. Everything was spilled over my short. So i quickly went to the bathroom for Guslul Janaba.. My questions are can i still continue with the fast and would i be rewarded for the fast that day if at all i didn’t break it?