filter - Adblock Plus - whitelisting rule -

i have element looks on page:

<a data-mytype="myvalue" href="http://example.com/promo/page">...</a> 

this element gets hidden following abp rule (present in 1 of filter subscriptions use):

##[href*="/promo"] 

how write whitelisting rule exclude element being hidden adblock plus based on specific attribute/value pair - data-mytype="myvalue" one?

i have checked writing adblock plus filters , adblock plus filters explained pages, have not figured out how (successfully) write filter based on specified attribute.

both pages mention standard css selectors should work, not seem work:

@@a[data-mytype="myvalue"] 

i have tried following:

#@#[href*="/promo"][data-mytype="myvalue"] 

what missing?

note: not want rule cancel out ##[href*="/promo"], looking rule whitelist elements based on specific attribute/value pair.

edit (2016-03-17): clarified question little bit , put small test page.

you first disable existing rule:

#@#[href*="/promo"] 

note selector has identical, otherwise element hiding exceptions won't apply. can add own rule, 1 consider data-mytype attribute:

##[href*="/promo"]:not([data-mytype="myvalue"]) 

the combination of these 2 rules should have effect want. reference: :not() css pseudo-class