Hi All ! I got new question here need your help , I don want to keep on open new post , so I decided to continue here , hope is ok for you all

Now I got a problem with the m700 magazine , the problem is when I leave the remain gas inside the mag after I play , leave it till next day and I cant shoot anything from the mag , no BB come out or no gas sound at all , and I use hand to push it found that very hard to push , its just like stuck or something , and I did open it out and check found nothing at all ... ? do you or anyone have this kind of problem ?
And how to solve it ? thanks
cheers