Updates the passed field value for the given routeId

---
### Parameters
**routeId** `Integer`<br />
**field** `String`: Name of column<br />
**value** `pyObject`: Datatype of referenced field<br />
**userId** `Integer`: Id of user executing the function<br />

---
### Returns
**# of records modified** `Integer`<br />
**message** `String` None if success<br />

---
### Example
```python
# Update the route name
recordsModified, msg = system.kanoa.lot.updateRouteField(5, 'routeName', 'Assembly Line 3 - Revised', 123)

# Disable a route
recordsModified, msg = system.kanoa.lot.updateRouteField(5, 'enabled', False, 123)
```