Just want to check if anyone has tried and overcome this.

We want to add a restriction to building a unit by adding the "and building_present_min_level building_type Building_level clause"

In principle this seemed to work and achieve the desired result.... except.

If you went into the screen where you can see the building build chain and selected the building then at some levels this resulted in a CTD and at other levels it didn't (Normally the lower levels were OK and it was the equeastrian building we hit this problem with).

Also, If you selected the building from the build queue to view the units it would build it would show the unit and the building required (on one line) - if there were multiple combinations of the same unit but with different buildings then this would display OK. However if you then selected the unit from that screen it would result in a CTD.

This is using RTW with the 1.6 engine but I'm guessing the problem exists regardless.

As the solution to this would allow a more dynamic ZOR this is our preferred solution to restricting certain 'culture based' unit recruitment particularly for more advanced types units belonging to a faction.