node privacy byrole module tries to store more than 48 character as a variable name

If you use node privacy byrole module + flexinode module, and you change the default permisions of a flexinode, it tries to insert the following line (and some similar) to the variable table:

INSERT INTO variable (name, value) VALUES ('node_privacy_byrole_forview_flexinode-6_default_2', 's:1:\"1\";')
INSERT INTO variable (name, value) VALUES ('node_privacy_byrole_foredit_flexinode-6_default_2', 's:1:\"0\";')

The length of the name is more than 48 character, and the length of the name field is 48 character, it chopped, and of course dosen't work.