Analogue pin data to display

[hassle2]

I have been programming picaxe's and using 4D displays for a year, now I have purchased a uLCD144-g2 and would like to use it as a stand alone instrument with the IO1 pin reading voltage and displaying it.
I include my program can you tell me how to change IO1 to my var j.
I have looked in the notes but this level of programming is above me at present

#platform "GOLDELOX"

#inherit "4DGL_16bitColours.fnc"

func main()
gfx_ScreenMode(LANDSCAPE) ; // change manually if orientation change

gfx_MoveTo(0,0);

gfx_ObjectColour(BLUE);
gfx_BoxTo(127,127);
pin_Set(ANALOGUE_10,IO1);
pin_Read(IO1);
while(j

[ESPsupport]

like

j := pin_Read(IO1);

?

[hassle2]

Thanks, it works great going to use it as a voltmeter for my motorhome and use a digtil current sensors for amps.
regards
Kevin