Help with boolean please

Help with boolean please


I have a multi-select box field.  What I want to do is when a specific choice is selected an email will automatically be sent to the relevent department.

This is the  code before trying to implement this with the different choices:

Medium_Published_to1
    (
        displayname  =  "Medium Published to?"
        type  =  list
        values  =  {"Shakti Durga's Media Centre (subscription)",   "Public Media Centre (Shanti Mission)",   "Teacher & Mentor Training Portal",   "Shakti Durga - Youtube",   "Shanti Mission - Youtube",   "Shakti Durga's Disciples",   "General Disciple Media Centre"}
        height  =  60px
        width  =  206px
    )

When I go to "actions on user input"  I get stuck in the "if" condition.

I click on "edit" select the "input.Medium_Published_to1" input field and do the following:

input.Medium_Published_to1 == "Shakti Durga's Media Centre (subscription)"

when I click done, I get the error message: left expression is of type stringlist and the operator == is not valid here

Please help,

thank you