saving image

Graphics 1028,960
SaveBuffer FrontBuffer(),fn$
Global sx=50
Global sy=50
Global r=255
Global g=255
Global b=255
Global save=0
Global load=0
Global width=GraphicsWidth():height=GraphicsHeight()
Global image = CreateImage(width, height)
Goto main

.size
Locate 0,60
sx=Input("size x ")
sy=Input("size y ")
Goto main

.colorsel
Locate 0,60
r=Input("red ")
g=Input("green ")
b=Input("blue ")
Goto main

.i
Color r,b,g
Locate MouseX(),MouseY()
Global d1$=Input$("")
Goto main



.save
Text 0,60,"Saving.."
fn$ = Input$("")
SaveBuffer(ImageBuffer(image),""+fn$+"")
Delay 100
Text 0,60,"Done"
Delay 100
Goto main

.load
Cls
Text 0,60,"Loading.."
imagel$ = Input$("")
image = LoadImage(""+imagel$+"")
Text 0,80,"Done"
Delay 100
Goto main



.main
While Not KeyDown(1)
If KeyDown(46) Then Goto Colorsel
If KeyDown(56) Then r=0:g=0:b=0
If KeyDown(59) Then
Color r,g,b
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
Plot Rnd(width),Rnd(height)
EndIf
If KeyHit(29) Then Goto size
If KeyHit(62) Then Goto save
If KeyHit(61) Then Goto load
If KeyHit(19)r=255:g=0:b=0
If KeyHit(34)r=0:g=255:b=0
If KeyHit(48)r=0:g=0:b=255
If KeyHit(17)r=255:g=255:b=255
If KeyHit(25)r=111:g=0:b=111
If KeyHit(21)r=255:g=255:b=0
If KeyHit(20)r=0:g=255:b=255
If KeyHit(24)r=249:g=81:b=0
If KeyHit(31)r=98:g=98:b=0
If KeyHit(210) Goto i
If MouseDown(1)
Color r,g,b
Plot MouseX(),MouseY()
Plot MouseX()+1,MouseY()
Plot MouseX(),MouseY()+1
Plot MouseX()-1,MouseY()
Plot MouseX(),MouseY()-1
EndIf
If MouseDown(2)
Color 0,0,0
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
EndIf
If KeyHit(211)
Cls
EndIf
If MouseDown(3)
Color r,g,b
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
Plot MouseX()+Rnd(sx),MouseY()+Rnd(sy)
EndIf
Color 0,0,0
Plot -1+Rnd(100),35+Rnd(100)
Plot -1+Rnd(100),35+Rnd(100)
Plot -1+Rnd(100),35+Rnd(100)
Plot -1+Rnd(100),35+Rnd(100)
Plot -1+Rnd(100),35+Rnd(100)
Plot -1+Rnd(100),35+Rnd(100)
Plot -1+Rnd(100),35+Rnd(100)
Plot -1+Rnd(100),35+Rnd(100)
Color 255,255,255
Text 0,20,"Keys are S,R,G,B,T,Y,O,P,END,INSERT,F1,F4,F5,DELETE,Left CONTROL,left ALT,C"
Wend

this is my new new new code but it still doesnt work