Specna arms sa h11 one bolt release on both sides

[alessioflorio]

Hello I have a sa h11 one and it has two bolt catches ( one on each side). I tried to clean my gun by taking the top part off the gun which revealed the gear box and the maxwell and when I done that I don't know what happend but my double bolt catches just stopped working. I found a tiny spring and I don't know where it goes. Please may I have some help and information on what to do.