Adding a file link in a Custom Field by script

Create a hyperlink custom field

var shipmentFile = file.create({
        name: `Shipment File - ${IFNumber}`,
        fileType: file.Type.PDF,
        contents: responseAsJson.response.labeldata,
        encoding: file.Encoding.UTF_8,
        folder: 1701,
        isOnline: false
});
var createdFileId = shipmentFile.save();
var filePath = file.load({
        id: createdFileId
})
var urlPath =  filePath.url;
record.submitFields({
        type: record.Type.ITEM_FULFILLMENT,
        id: IFInternalID,
        values: {
                'custbody_jj_gel_request': loggingURL,
                'custbody_jj_gel_response' :'',
                'custbody_jj_shipping_label': urlPath
        },
        options: {
                enableSourcing: true,
                ignoreMandatoryFields: true
        }