I have some guys out in the field using FM Go 12, who read special meters.  They want to enter 5-digit readings, BUT, they always read the dials Right-to-Left, for accuracy.  How could I develop a numeric data entry field that allows these right-to-left reads on the form (always 5 digits), and when done, they click a button and this field is transformed left-to-right in reverse numeric order? 

e.g.,  53463 (entered), 36435 (stored) - or even - 43280 -> 08234 ??  My brain is fried.  THANKS!!

I think you should store the original entry, just case and have a second field with the reversed/corrected digits. The second field can be a calculation using a custom function like this one (which I have not tested): https://www.briandunning.com/cf/160

I would probably build a layout with a big numeric keypad, i.e. it's made of FileMaker buttons. As they tap each button my script might store the digit in a repetition of a variable, e.g. $n[5], $n[4], etc. Actually $$ variables would be better, so you could display them on the layout as merge variables. The final tap would assemble the result: $n[1] & $n[2] & etc.

 

Be sure to store the result in a text field, since number fields will ignore leading zeros.

Wow!  That was quick!  I'll try both of these techniques.  One oddity:  not all meters are read in reverse order, so I may try to make it so that if the RevRead field is not blank, I will transpose.  Final "Read" field, will have to be numeric.  Ignoring leading zeroes is just fine.  Not all numbers are 5 digits.  Lots of human factors variance in the way the guys read these meters to deal with, too.

 

Thanks guys, I'll let you know. 

Thanks David & Fitch.  Both techniques work beautifully!  You da men!