Condition Statement Builder?

Is it safe to create a "conditional statement builder" for my custom upload page?

Here's an example:
The admin wants to update the userlist but she don't want to require some column upon upload.
Then 1 week had passed, and the requirements changed due to some reason. The admin now have to update the userlist but she wants to require some column. Then maybe next week, she will add a new condition that this column should be number only.

Did someone get my point? Hahahaha. I hope you understand what I want to happen.

I will be working on a conditional statement builder interface (consist of dropdowns, textboxes for custom inputs) that users can build a, you know, conditional statement:

Code:

Interface:
if [dropdown_fieldname] is [dropdown_comparison_text] to [dropdown_fieldname_or_value] then [dropdown_possible_options]

Ex:
if [first_name] is [not_equal] to ["Francis"] then [skip_row_upload]