Filter on FieldRef crashes NAV

Hi,

When I do this

filterString :=‘0123456789012345678901234567890’; ( 31 characters)

TableNo := 5900;
FieldNo := 13; ( Field City defined as TEXT30)

RecordRef.OPEN(TableNo);
CLEAR(FieldRef);
FieldRef := RecordRef.FIELD(FieldNo);
FieldRef.SETRANGE(filterString);

Navision crashes without an error message, can anyone confirm this problem?

The problem only occurs when the length of the FilterString exceeds the length of the field.

Thanks for your help!

Rgds,

Max