Hello,
You should create dependencies, but through the dependencies you are not disabling/enabling the fields, you’re hiding/showing them. The dependencies are associated only to the following fields:
– Checkbox
– Radio Button
– DropDown
– Calculated Field
So, if you want to create dependencies for a number field, you should insert a calculated field (as auxiliary field) whose equation check the value of the number field and return a result, and based on the result you define the dependency rule for showing or not the rest of fields.
Note: as the calculated field is used as auxiliary, it is not needed in the form’s interface, so, you can tick the property: Hide Field From Public Page
More information about the use of dependencies with the calculated fields in the following link:
https://cff.dwbooster.com/documentation#dependencies
Best regards.