Exclude Colour in Search

[Mytra]

I want exclude colours in card search.

I tried in predicate:
card.@colour != 'blue'

What is wrong with this term?

[Piotr]

This field is numeric and @ is used for aggregates.

See http://imtgapp.com/forum/index.php?topic=21080.0

Try card.colour != 2

[Mytra]

Thx, this work.

I tried a numeric value, before i asked. It seems i didn't understand where to use @.