Asterisk BLF Trouble Shooting -- 2

We currently are using asterisk version 11.22.0 We have BLF currently working Asterisk Feature Busy Lamp Field (BLF) so it is working but we have to create an BLF subscriber extension like this [BLF] exten => 1000,hint,SIP/${EXTEN} exten => 5000,hint,SIP/${EXTEN} exten => 5001,hint,SIP/${EXTEN} exten => 998899,hint,SIP/${EXTEN} exten => Prox1,hint,SIP/${EXTEN} But this is working. when the command asterisk -rx 'core show hints' run it shows hints for each extension This works but we want to create a simpler BLF BLF subscriber extension like this [BLF] exten => _XXXXX,hint,SIP/${EXTEN} But this is not working. when the command asterisk -rx 'core show hints' run it does not show hints for each extension We need would like to create an extension like the because it will automatically work with any new extensions. We need somone to make this work in some way. Maybe create a Macro or thing? Please respond with "I know BLF" at the beginning of your message so that I know you have read.