asterisk users - Dec 2010 - Multiple digits as takecall in followme application

Hello everybody,

I am trying to set up followme. As far as I understood from 
followme.conf multiple digits are allowed to be used for taking call. 
Currently call is accepted only if one digit is configured for takecall, e,g
takecall=>5

Don't you know are there any real limitations for using multi-digit 
combinations for accepring calls?

Thanks,
Kseniia