T48 blf extension issue

[KristianMedK]

when i autoprovision my t48 i get some unexpected values for one of my blf buttons.

what i return for the button is this

linekey.7.line = 0
linekey.7.value = 200
linekey.7.extension = 8*
linekey.7.type = 16
linekey.7.label = KristianMedK

however, for the extension, when i look up the phone it has the value 8*200.

if i manually edit it to 8* the blf functions correct when picking up a call, if i dont edit it and try to pick up a call it dials 8*200200 instead of 8*200.

how can i force the phone to only put 8* in the extension value, and not 8*<linekey.7.value> which is where i suspect it takes "200" from.