print('=== BEFORE ===')
for uid in (32, 27):
    u = env['res.users'].browse(uid)
    print(f"  uid={uid} login={u.login} active={u.active} "
          f"field_staff={u.x_fc_is_field_staff} sync_id={u.x_fc_tech_sync_id!r}")

try:
    env['res.users'].browse(32).x_fc_tech_sync_id = 'simranjeet'
    env['res.users'].browse(27).write({
        'x_fc_is_field_staff': True,
        'x_fc_tech_sync_id': 'hk',
    })
    env.cr.commit()
    print('Commit OK')
except Exception as e:
    env.cr.rollback()
    print(f'FAILED: {type(e).__name__}: {e}')
    raise

print('=== AFTER ===')
for uid in (32, 27):
    u = env['res.users'].browse(uid)
    print(f"  uid={uid} login={u.login} active={u.active} "
          f"field_staff={u.x_fc_is_field_staff} sync_id={u.x_fc_tech_sync_id!r}")
print('DONE')