basic help

I'm trying to code this spaceship game where your stuck in the middle and all you do is rotate to shoot enemies but i'm having trouble drawing the bullets. when I tried to draw the image with the line drawimage bullet,shot\x,shot\y it said "image does not exsist". but when I replaced it with drawimage bullet,300,400 it worked! the games only half finished but i'll post the code below. ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;surounded a space ship game;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;;;;;;;;;by mike oosting;;;;;;;;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; AppTitle "surrounded" Graphics 800,600 AutoMidHandle True SetBuffer BackBuffer() ;images Global ship = LoadAnimImage("shipanim.bmp",50,50,0,4) Global enemydown = LoadImage("enemy.bmp") Global enemyleft = LoadImage("enemyleft.bmp") Global enemyup = LoadImage("enemyup.bmp") Global enemyright = LoadImage("enemyright.bmp") Global bullet = LoadImage("bullet.bmp") Global title = LoadImage("title.bmp") ;Global Global shipturn = 0 Global menu = 1 Global spacebar = 57 Global shotaim = shipturn ;types Type shot Field x,y End Type ;main loop While Not KeyDown(1) If menu = 2 Then DrawImage ship,400,300,shipturn If menu = 1 Then DrawImage title,400,300 shipspin() titlescreen() If KeyHit(spacebar) bulletstuff() EndIf Flip Cls Wend ;function titlescreen() Function titlescreen() If KeyHit(2) menu = 2 EndIf If menu = 1 Then Text 400,500,"press 1 for easy difficulty",True,True End Function ;function shipspin() Function shipspin() If KeyHit(205) shipturn = shipturn + 1 EndIf If KeyHit(203) shipturn = shipturn - 1 EndIf If shipturn = -1 Then shipturn = 3 If shipturn = 4 Then shipturn = 0 End Function ;function bulletstuff() Function bulletstuff() shots.shot = New shot shots\x = x shots\y = y For shot.shot = Each shot shots\x = shot\x - 1 shots\y = shot\y - 1 Next DrawImage bullet,shot\x,shot\y End Function