无法在循环中达到变量 - php和fatfree框架

I create an array in PHP code like that:

foreach ($this->get("DB")->result as $ct){
$contentTexts[$ct["langCode"]][$ct["wordCode"]] = $ct["wordText"]; //$contentTexts is a two dimensional array
}

and assign a variables like that

$this->set("contentTexts",$contentTexts); // $contentTexts is an array described above
$this->set("lwMetaTitle",$content->lwMetaTitle);

In template file when i want to use like:

<F3:repeat group="{{@contentTexts} }" key="{{@langCode}}" value="{{@ctext}}" counter="{{@counter}}">

{{@ctext[@lwMetaTitle]}}

</F3:repeat>

it throws an error. when i change this row

{{@ctext[@lwMetaTitle]}}

to

{{var_dump(@ctext[@lwMetaTitle])}}

it describes the error like this:

Internal Server Error Undefined index: @lwMetaTitle

I think it can not reach @lwMetaTitle variable in a for loop. So how can I do this?

I know it isn't exactly an answer, but I would just avoid using F3's templating system in favor of handling views with straight-up PHP. I have found that to be much easier especially since F3's docs and support are terrible. Besides, why bother learning a new non-standard syntax when you already know PHP?

Aside from that, my only other thought is to try getting the framework variable outside of the loop and assigning it to a local variable, something like this:

$var = F3::get('var_name');
<F3:repeat .... >
  <?= $var; ?>
</F3:repeat>