So what is the data type for [Jobs #] ? If it's text you need to delimit it with single quotation marks.
Do yourself a favour and eliminate, or at least going forward do not use, special characters like that in any object name (save for possibly underscore character).
And what is the form control that contains this parameter - a combo, or textbox, or something else? Last but not least, not sure when this is happening. Is it for records where there is no job number?
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.