I'm having a little trouble following your explanation, but when you change the Formatting of a Control in one Record, on a Continuous View Form, you're Formatting that Control in all Records! That's how Continuous View Forms work...unless...you use Conditional Formatting off of the Menu/Ribbon!
In Form Design View
- Right-Click on the Control to be Formatted
- Click on Conditional Formatting
- Going thru the boxes, from Left-to-Right
- Under Condition1 select Expression Is
- In the 'conditions box' to the right, enter [n1] = [Num1]
- Use the icons to set your Formatting (the 'paint bucket' controls the Back Color)
- Click on OK
Note that the Square Brackets around the Control names are mandatory, in Conditional Formatting.
Now only the Control on the matching Record should change color, if I understand you correctly.
The problem with making anything foolproof...is that fools are so darn ingenious!
All posts/responses based on Access 2003/2007