Age enter number, code hidden ranges

4.  What is your age?
type: text
instruct:<b>[ENTER EXACT AGE]</b>
datatype: number
size: 2
maxlen: 2
dta: 98. REFUSED TO ANSWER
termif: $Q4 < 18 {text: Q4 | Under 18} {id: Q4A}
termif: $Q4 >= 55 {text: Q4 | 55+} {id: Q4B}
termif: anyChecked($Q4,99) {text: Q4 | Refused to answer}

AGE_BREAKS. Age Breaks 
type: radio
invisible: y
1. 18-34 {if $Q4 >= 18 and $Q4 < 35}
2. 35-44 {if $Q4 >= 35 and $Q4 < 45}
3. 45-54 {if $Q4 >= 45 and $Q4 < 55}