Custom class for the tab title

Hello,
I made a custom Iconfont and it works perfectly fine!
I want to use my icons in different tab titles, but the Visual Composer doesn’t give any option to use custom ones and I don’t know how to implement my Iconset into the Iconpicker file from the Visual Composer.

So I tried to add it to the title text with :before and it worked, but I need to add a custom class or ID to set different values for every tab.

The custom class option in the Visual Composer only allows a custom class for the panel of the tab, not the title.

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.vc_tta-title-text:before {     content: "\e900";     font-family: 'iconset' !important; padding-right: 5px !important; }

I need to put the custom classes in here.

1	<span class="vc_tta-title-text">Text</span>

Is there any way how to get around this?
Thank you!

Ticket