Problem with sql statement

[SoftIl]

Hi,
I get an exception ("Expected '='" or in Valentina Studio: kernel error 625) if I try the following sql statement:

"UPDATE arbeitsverhaeltnisse SET bezeichnung = 'sonstiges',kennzeichen = '1',key = '2', WHERE (record_id = 'b79191df-44d0-4958-b97c-fbcdffbb')"


Fields param:

bezeichnung = VarChar/50
kennzeichen = Byte
key         = UShort
record_id   = string/32

Where is the mistake?

Thanks for your help
Carsten