if its a text field then it shouldnt be modifying any values that you enter
into it - check the field to make sure that its set up as a text field in the
table and on the form itself

Using the Val function turns the string into a number.  Numbers do not have
leading zeros.  You will need to treat the value in the text box as a string.

It's weird to be doing string operations on a number.  What are you actually
trying to accomplish?  Also, is this text box bound or unbound, if bound
what is it bound to, and should it always contain a number?

That string of digits is too long for the Val function to
convert to a number.  Instead of trying to manipulate the
digits with numeric functions, you should think of it as a
text string.

It looks like all your line of code is doing is deleteing
any dots in the string of digits.  In that case, there is no
reason to use Abs(Val(

OTOH, your code does nothing to prevent a user from entering
non numeric digits, which will also mess up the result of
using Val.

Maybe you have some other unexplained things going on, but I
am having trouble guessing at what objective that code is
attempting to achieve.