>I'm trying to use combobox inside a grid. The grid recordsource is a secondary table and the combobox shows a field from a primary table. When I leave the combobox this data is display as text. I also have a relation between both tables in Dataenvironment.
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>If the grid have many rows, the combobox displays differents values, deppending on the relation. This generally works, but sometimes don't.
>It seems like the relation is broken (maybe when i leave the grid)and the combobox display the same value in all rows. When I click on the combobox again it shows me the correct value. Thanks

Temp relationships are not steady here. You can avoid them and build combo with controlsource="master.foreignkeyvalue" and rowsource="lookup.description,primarykey" and boundcolumn=2
There are few more ways to bring up this case, the common one is view.