No, The field size is determined by the number type in the properties. E.g Integer is a field size of 2 bytes, Double is 8 bytes, etc. Only the Text (and Decimal) data type allows you to specify the number of bytes the field can use. Other datatypes,
such as Memo, have no field size and are only limited by the max size of the database file (2 GB).
OTOH, you gain nothing by limiting a Text field to less than 255 bytes because the field only takes up as much space as needed (up to 255) to hold it text string. So you should leave Text fields at size 255, unless you have a specific data requirement from
a business rule for a smaller limit on the number of characters (e.g. soc sec # must be 9 characters)