How to Check A box if a field is not blank

[Nsmjc]

I want to have a checkbox checked if a certain field is not blank.

I have tried this formula in the text field

if (event.value=="")
{this.getField("Check Box10").value="Off"}
else
{this.getField("Check Box10").value="Yes"}

But it is not working any Ideas?

[try67]

- What kind of field is the second field?

- Where did you place the code?

- Are there any error messages in the JS Console after you change the field's value? (press Ctrl+J to open it)

[try67 · Accepted solution]

- Is the export value of the check-box really "Yes"?