Can't access Custom field's Fieldname from Custom Script

[Chipo_Hameja]

I have a custom field with Fieldname map of type Geolocation as shown in the image attached.

Here is the custom script:

	onload(frm) {
	    //Reference for project map
	    var projectmap = frm.doc.map;
	    //Multi-dimension array to store project coordinates
	    var projectlatlngs = [];
	    //Loop through Project's land coordinates and draw a plot of it
	    $.each(frm.doc.land_coordinates, function(land_project_coordinates_index, land_project_coordinates){
	        projectlatlngs.push([land_project_coordinates.longitude, land_project_coordinates.latitude]);
	    })
	    
	   var projectpolyline = L.polyline(projectlatlngs, {color: 'indigo', opacity: 1, weight: 1, fill: 1, fillOpacity: 0.2, fillColor: 'indigo'}).addTo(map);
	   map.fitBounds(projectpolyline.getBounds());
	}
});```

And I get the following error:

Uncaught (in promise) ReferenceError: ***map is not defined***

    at onload (eval at setup (script_manager.js:160), <anonymous>:12:150)
    at a (script_manager.js:90)
    at script_manager.js:108

![Test%20X%20-%20Google%20Chrome%201_26_2021%2004_57_51%20PM|690x415](upload://fVfMPvibho6cd6K9Af6Ka6h7HEi.png)

[ramielian]

I see this is used in project doctype, but you are referencing onload(frm) only, are you adding this on server side or using the custom script?

[Chipo_Hameja]

The code doesn’t appear well when I post it here. I’m using custom script. The full code is just fine,I tried it with different doctypes were the map is not a custom field. But for this one, map is custom field and I’m having an error that it’s not defined

[Duncan_Nkhata]

var map = frm.get_field("map").map;