Web request URL problem

 

Hi - im trying to run an EA which requires web request URL to be input, however when i attempt to input the URL it wont store it in the dialog box - it simply disappears.

Ive read of other people experienceing the same problem however ive not been able to find a solution.

How do you get the URL to save in the dialog box under the "tools", "options", "expert advisors" - "enable URL web request" dialog box???