Wrong value types on custom fields

[avisom]

NetBox version

v2.11.7

Python version

3.6

Steps to Reproduce

1. Create a custom field for a ipam > prefix.
2. Select a value type as a text.
3. Update prefix through the API and set a integer value equal to 51 for the new custom field in the same request

Expected Behavior

Error should be returned.
If a prefix updated through the GUI this works fine.

Observed Behavior

The prefix has an integer value on the custom field