Basically, I'm opening a mask withand in this mask there's a combobox. What I need to do is try to show in the combobox only some results based on the results of the first mask, instead of showing all the results found in the table is connected to as is doing now. I have tried passing a the "where" parameter in the OpenForm method in order to filter the options, but it doesn't seem to update the these. How could I go about updating the options shown in this combobox? Note: The idea is that in the first mask the user inputs something, and if there is more than one option in the Database then this mask with a combobox shows to make the user select between the available options. Hope this makes sense.HTML Code:DoCmd.OpenForm "MyComboBoxMask"