[Faisal_khan]

Try this

pawn Код:

if(newkeys & KEY_CROUCH && GetPlayerState(playerid) == PLAYER_STATE_SPECTATING && spectatorid[playerid] != INVALID_PLAYER_ID)
        {
            AdvanceSpectate(playerid); 
        }
        else if(newkeys & KEY_JUMP && GetPlayerState(playerid) == PLAYER_STATE_SPECTATING && spectatorid[playerid] != INVALID_PLAYER_ID)
        {
            ReverseSpectate(playerid); 
        }

Instead of

pawn Код:

if(GetPlayerState(playerid) == PLAYER_STATE_SPECTATING && spectatorid[playerid] != INVALID_PLAYER_ID) 
        { 
        if(newkeys & KEY_CROUCH) AdvanceSpectate(playerid); 
        else if(newkeys & KEY_JUMP) ReverseSpectate(playerid); 
    }