Once you have assigned a value to a user state field for a member, you can change it. When you change the value in a user state field, XCF broadcasts the change to those active members that have group user routines.

For IXCLEAVE and IXCQUIES, if you do not specify the USTATE and USLEN parameters, XCF does not change the existing value in the user state field. For IXCJOIN, if you do not specify the USTATE and USLEN parameters, XCF retains the existing value in the user state field unless the joining member was previously not-defined. In this case, XCF clears the user state field to zeroes.

For IXCLEAVE, IXCQUIES, and IXCSETUS, you specify on USLEN the number of bytes of the user state field you want.