I have problems making a comparison with two different fields.

We have orders and then there is maintenance orders (these order types has different order numbers). Now I need to make comparison with these two order types with help of two different fields.

I have one field that have an order number and other field which starts with the order number and has a other letters too. Now I need to make a report in which there should show the original order and the maintenance order both.

For example I have original order no. 123 and I have a maintenance order which has a field that starts with 123 but it has a different order for example no 456.

Order No          Name                 Text

123                      ABC                     ABCDEFG

456                      CDE                     123 maintenance

I have this kind of formula in the Select Expert

{TEXT} startswith {?parameter which gives the order no} but this only shows the maintenance order in report. And I have no clue how to continue this formula that it shows the other order too..

How can I make a report that shows these both orders?