[Typo3] extension kickstarter DB relation

[Elias Humbolt]

I setup a new FE plugin extension. 

I have a "mainObject" where you can choose from a "objectType" selectbox which 
is filled by a DB relation to the "objectType" table. Now everything works 
fine so far, except that in the record creation wizard form there is the 
objectType "uid" shown and not its "name" from the corresponding field in the 
database.

Of course it it is shown, since I did not choose anywhere to show anything, so 
it shows the "key" field I guess.

My question logically is, how and where can I set that the "name" field will 
be shown instead of the "uid" field?

elias