I'm not a PHP deveoper, but i can make sense of most of it with a little guidance, so forgive my ignorance.
I have a contact lens order form with a drop down field containing all of the different brands of contacts. Below that i have two rows of fields, left eye and right eye. Each row has a combination of single line text fields and dropdowns that appear if either right eye or left eye are checked. The "diameter" single text field however needs to be pre-populated with a number value based on the brand that is selected in the brand drop down field. I know that fields can be dynamically populated based on another fields' value, i just couldn't find any examples of this that would apply to my form. Also, what syntax do i need to use in the bradn drop down field for "Brand | 14.00" so that the user only sees the brand name, but the value of their choice is in fact the diameter value to be passed to the diameter single line text feild. Can anyone help me out here?