I have a Matrix field named "skillLevels" with a single block type.
Each row has 2 fields, "skillName" and "skillLevel"

skillName is a relationship to another entry (Skills)
skillLevel is a simple integer.

I am building a custom plugin which takes post data from a form.
The form contains an entry ID ($groupId), a skill name and a value to use to modify the level of that skill.

```
$groupEntry = craft()->entries->getEntryById($groupId);

    $skillLevels = $groupEntry->skillLevels;

    foreach($skillLevels as $skill){
       $skillLevel = $skill->skillLevel; // outputs the skill level
       $skillName = $skill->skillName; // this doesn't work
    }

```

`$skill->$skillLevel` gives me the integer stored in that field.
But `$skill->skillLevel` does not gives me a model. I then tried using $skill->skillLevel->id but still no luck.

How can I look through the Matrix rows to find the row that matches the skill name coming from the form Post data?