Is it possible to hide a field based on the length of another field?

It is possible to hide a fiedl based on a lenght of other field. For exemplo, IF [FIELD A] is shorter than 7 characters hide [Field B]?

Unfortunately, this cannot be directly achieved.

What you can do is set a character limit for field 1.

OR set up Input Mask to ensure that the character entered in field 1 are not less than 7 characters.

But it will not be possible to create a calculation based on the character of another field.