[Qgis-user] display feature of the rule-based atlas

[Dario]

Hello, 

I'm using qgis2.4, and atlas a function to generate a map with 30 sheets, on a layer with 30 records named HOUSES. 
The control layer of the Atlas is the layer HOUSES, or a sheet for each feature of the layer will be generated. 
However, these are all adjacent HOUSES, ie visualize more than one batch on the same sheet, but I need to display or filter to see only the feature of the current line while using the atlas, or at least, the feature line current atlas, were displayed in a different color. 

I checked the configuration of the atlas, there is the option to "filter through" where I can enter an expression, where I can  control the display of features based on a rule, as can be seen in the field help FeatureId $ (Returns the ID of the feature the current line while using the atlas. This allows you to use features of the atlas on rules and, for example, show or hide features based on its ID). 

In short, I need to display the feature displays only the current line of the atlas, or at least get this feature in a different color from the other. 

Has anyone used this feature? Have a tip on how to build this expression? 
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