Freeradius mikrotik-xmit-limit mysql

Hello

I am working on a project for an ISP
building a radius billing with Freeradius mysql and mikrotik CCR

I am trying to use mikrotik-xmit-limit using mysql but its not working more than 4GB so i found solution
Mikrotik-Xmit-Limit-Gigawords = 4GB

now how can i give a client 5GB of data limit
how can i use both Mikrotik-Xmit-Limit-Gigawords and Mikrotik-Xmit-Limit in radcheck table

or any way to use Mikrotik-Xmit-Limit more than 5GB?