paper-dropdown-menu / paper-listbox : send label instead the value in the request

[PPCM]

I have paper-listbox element in a paper-dropdown-menu, values of items are different from labels.
Here is the example

<paper-dropdown-menu label="Gender" name="gender" required error-message="Gender is required">
   <paper-listbox slot="dropdown-content" attr-or-property-name="value">
      <paper-item value="M">Male</paper-item>
      <paper-item value="F">Female</paper-item>
   </paper-listbox>
</paper-dropdown-menu>

But in the post, the label is given instead of the value of the item

Any idea to have gender=M or gender=F in the request?

Actual outcome

Actually the output request contains gender=Male or gender=Female

Browsers Affected

• [X ] Chrome
• [X ] Firefox
• Safari 9
• Safari 8
• Safari 7
• [X ] Edge
• IE 11
• IE 10

[jakebeatty]

change attr-or-property-name to attr-for-selected