Hi,
I could be wrong, but I think you can allow the decimal points to be shown in a Numeric Field by setting the correct
Edit and Display Pattern on the Field tab. The Display pattern specifies how the data will appear in the field. The Edit pattern specifies how the data must be entered into the field.
To set the correct patterns, you need to click the Numeric Field object, select Edit > Patterns > Display, and in the Patterns dialog box (on the Display tab) under Select Type, click num.decimal{}. Then click the Edit tab, and under Select Type, click num.decimal{}. Click Apply, and OK.
For more information on patterns, check out the LiveCycle Designer Help topics - About field patterns and value formatting and When to use patterns in Using LiveCycle Designer ES > Working with Objects > Formatting field values.
I hope that helps,
Drew