Missing last decimal place when number is 0
I am using a web form for users to enter a very small thickness in inches which is then output to a Word document template. I would like the thickness to be reported out to 4 decimal places, so for the entry type I selected Decimal with 4 Decimal places. However, when the number entered ends with a 0 the output into my Word document leaves off this 0 and only reports out to 3 decimal places. For example, if the user enters 0.0020 when this number populates in my Word document it does so as 0.002. Any ideas on how to fix this or better format my request to obtain my desired output?