Removing characters from an input data-field

Question

Hi.
Is it possible to "Trim Off" characters from a Text Field data, and automatically input them into another Text field?
Let's say I have the following code :
*<Field name='telephonenumber'>*
*<Display class='Text'>*
*<Property name='title' value='Phone Number in International Format'/>*
*<Display>*
*</Field>*
This code is to input the telephone number in International Format (such as :  [phone])
Now, lets say that I want to create a second Data Text field for phone number; but, this time, it is for the phone number in LOCAL format.
In other words, I want to write a code which will AUTOMATICALLY  remove the first 3 or 4 characters from the "International Number",  and input them into the "Local Number"  field.
This would save me the trouble or writing the number a second time. My code should be able to simply Trim Off the initial "+1 234", and automatically input the remaining "*567 8900"* into the Local Number field.
How could I accomplish this?
Thanks

Answer 1

Based on your code, it looks like you have fields called global.workgsmad (local style) and global.workgsm (international style)
Assuming your global.workgsm format will always be '+x xxx xxx xxxx' you want to skip the first 6 characters, not 4
The simplest way to do this is like so:
<Field name='global.workgsmad'>
   <Expansion>
      <substr>
         <ref>global.workgsm</ref>
         <i>6</i>     <!-- Skip the country code and area code '+x xxx ' -->
         <i>8</i>   <!-- 8 characters were left for the format 'xxx xxxx' -->
      </substr>
   </Expansion>
</Field>Alternatively, you could change the substr block to read
<substr s='6' l='8'>
   <ref>global.workgsm</ref>
</substr>Both formats are valid.
If the phone number is not a fixed format, you'll have to do something more complicated.
Jason