Issue with BRF+ ACTION send email

Hello Experts,

I am using BRF+ ACTION SEND EMAIL  to send email to a group of people when a QN is completed.

I already have 8 place holders for this , when I am trying to insert 9th 10th 11th place holders its not all showing in the message place holders list where it should show,

I already tried activating and refreshing message place holders but didnt work.

I want to know if there is any restriction when the number of place holders.

Thanks,

Bala