Unhandled exception, expected symbol, got number. Not sure what to do!

Error: Unhandled Exception
Exception: UnexpectedTypeException: Expected Symbol, given Number
Stack:
- onTap() at C:\Users\User\eclipse-workspace\MyProjects\Map Widget\source\MapWidgetDelegate.mc:49 0x10001418
- handleEvent() at T:\mbsimulator\submodules\technology\monkeybrains\virtual-machine\api\WatchUi.mb:1060 0x300022b5
- handleEvent() at T:\mbsimulator\submodules\technology\monkeybrains\virtual-machine\api\WatchUi.mb:1266 0x300024a4

The problem is located at  all four variants of: g[1] = (g[1] - 1.0); 

(Just so you know what g means: g = Position.getInfo().position; and is a global variable in the delegate and a variable in onUpdate in the view.

g[1] and g[0] indicate latitude and longitude of said position which i am trying to  add to or take away 1.0 from on a tap up down left or right to change the position info and thus my view.

However I need help as I do not understand why it is going wrong as I am a bit of a coding noob (much of the code is open source that I am adding onto. Thanks for any help.

on tap part of Delegate

function onTap(clickEvent) {
    var coord = clickEvent.getCoordinates();
    var x = coord[0];
    var y = coord[1];
    
    if (posnInfo != null) {
        if(x > 0 && x < 60 && y > 40 && y < 200)
        {
            System.println("left");
            g[1] = (g[1] - 1.0);
            WatchUi.requestUpdate();
        }
        else if(x > 180 && x < 240 && y > 40 && y < 200)
        {
            System.println("right");
            g[1] = (g[1] + 1.0);
            WatchUi.requestUpdate();
        }
        else if(x > 60 && x < 180 && y > 0 && y < 60)
        {
            System.println("up");
            g[0] = (g[0] + 1.0);
            WatchUi.requestUpdate();
        }
        else if(x > 60 && x < 180 && y > 180 && y < 240)
        {
            System.println("down");
            g[0] = (g[0] - 1.0);
            WatchUi.requestUpdate();
        }
        else
        {
            System.println("cl");
            WatchUi.requestUpdate();
        }
        } 
        else
        {
            System.println("no");
        }

On update and set position part of View

function onUpdate(dc) {
    var string;
    var width;
    var height;
    var screenWidth = dc.getWidth();
    var heading = Sensor.getInfo().heading;
    var minuteHandAngle;
    var targetDc = null;
    
    var targDc = null;
    
    var r;
    
    var g = Position.getInfo().position;
    
    View.onUpdate(dc);
    
    if (null != offscreenBuffer) {
        dc.clearClip();
        curClip = null;
        // If we have an offscreen buffer that we are using to draw the background,
        // set the draw context of that buffer as our target.
        targetDc = offscreenBuffer.getDc();
        targDc = offscreenBuffer.getDc();
    }
    else
    {
        targetDc = dc;
        targDc = dc;
        if (g!=null)
        {
            g = g.toDegrees();
            find(g[0], g[1]);
            g = null;
            for(var i=0, yy=y-imgs-my; yy<y+imgs; yy+=imgs) {
                for(var xx=x-imgs-mx; xx<x+imgs; xx+=imgs, i++) {
                    if(ar[i]!=null) {
                        dc.drawBitmap(xx, yy, WatchUi.loadResource(ar[i]));
                    }
                }
            }
        }
    }
        
    //Use white to draw the hour and minute hands
    
    width = targetDc.getWidth();
    height = targetDc.getHeight();
    
    width = targDc.getWidth();
    height = targDc.getHeight();
    targetDc.setColor(0x0000FF, Graphics.COLOR_TRANSPARENT);
    targDc.setColor(0xFF0000, Graphics.COLOR_TRANSPARENT);
    minuteHandAngle = heading;
    targetDc.fillPolygon(generateHandCoordinates(screenCenterPoint, minuteHandAngle, 22, 0, 8));
    
    targDc.fillPolygon(generateHandCoordinates(screenCenterPoint, minuteHandAngle, 20, 0, 6));
    dc.setColor(0x0000FF,-1);
    dc.fillRectangle(x-4, y-4, 8,8);
    
    up.draw(dc);
    down.draw(dc);
    left.draw(dc);
    right.draw(dc);
    
    dc.setColor( Graphics.COLOR_GREEN, Graphics.COLOR_TRANSPARENT );
    if( posnInfo != null ) {
        gps.draw(dc);
    }
    else {
        dc.setColor( Graphics.COLOR_RED, Graphics.COLOR_TRANSPARENT );
        dc.drawText( (dc.getWidth() / 2), (dc.getHeight() / 2), Graphics.FONT_TINY, "No position info", Graphics.TEXT_JUSTIFY_CENTER );
    }
}

function setPosition(info) {
    posnInfo = info; 
    WatchUi.requestUpdate();
    Application.Storage.Position;
}

Update the view

Hope thats enough info.