i use composer8.1.201.91,
i set input object Grammar Type = builtinPhone,
but when i keyin *,i can’t get * char?
You need to build your own grammar for * as it is not part of the phone number valid digits (0-9)
From Manual,
builtinNumber
Valid spoken inputs include phrases that specify numbers–for example, one hundred twenty-three, or five point
three. Valid DTMF input includes positive numbers entered using digits and the star (*) character (to represent a
decimal point). The result is a string of digits from 0-9 and that can optionally include a decimal point (.), and/or a
plus sign (+) or minus sign (-).
builtinPhone
Valid spoken inputs include phrases that specify a phone number. DTMF star (*) represents x. The result is a string
that contains a telephone number consisting of a string of digits and optionally, the character x to indicate a phone
number with an extension–for example, 8005551234x789."
I suspect, the variable defined as integer.