Error with Check Box

I am attempting to add a check box to a form but when I attempt to initialize it or do any test against it I get the following error.

/* CER ERROR #3036 : Form Control with NO szDict assigned */
Function Name: P5543101_W5543101A_0_272
Function Description: ER for W5543101A_0_272
Form: W5543101A - Purchase Order Workbench
Control: 0 - FORM
Event: 272 - Dialog is Initialized
Seq #: 22
Line #: 19
Line Text: FC PO Level Email = "1"

*************************

/* CER ERROR #3021 : Invalid destination for assignment */
Function Name: P5543101_W5543101A_0_272
Function Description: ER for W5543101A_0_272
Form: W5543101A - Purchase Order Workbench
Control: 0 - FORM
Event: 272 - Dialog is Initialized
Seq #: 22
Line #: 19
Line Text: FC PO Level Email = "1"

Hi, just wondering how you got on with this? I am having a similar problem.

You have to associate the check box with either a data dictionary or a business view control, and then set the filter in the properties (highlight -> edit-> associate).

Hi Im facing the same issue and I couldn't use your solution of (highlight -> edit-> associate). may be because I'm using E9.1. Anyone else know a fix for this?