>Is it possible for a user to tick a checkbox/option and as a result the form automatically highlights other objects on the form or dims/change colour them?
>
>The idea is if the user chooses a 'Yes' answer to a question, for example, he/she will then be prompted to tick some other check boxes as a result.

You can add the code like:

*** checkbox.InteractiveChange()
IF !empty(this.value) && checkbox is checked
thisform.txtName.BackColor = RGB(255,0,0) && red
thisform.txtAddress.BackColor = RGB(255,0,0)
ENDIF

You can also manipulate this way other properties, like .ForeColor, .FontBold etc.