I try to call a JS function from my qweb inherited template via:

 <tr t-extend="ListView.row">
      <t t-jquery="td" t-operation="replace">
     [...]
      <t t-set="test" t-value="value_check(column.id, record.get(column.id))"/>

But I allways get the Error:

   Error: QWeb2 - template['ListView.rows']: 
   Runtime Error: Error: QWeb2 - template['ListView.row']: 
   Runtime Error: TypeError: dict.value_check is not a function

without the function call the extended template works fine. So the JS function cannot be found. First I tried this JS code for my function:

openerp.my_module = function(instance){
  var module = instance.web // loading the namespace of the 'sample' module

  module.View.include({
      value_check: function(key, value){
          console.log(key + ": " + value);
          return true;
      },        
  });
};

and then also

openerp.my_module = function(instance){
  var module = instance.web; // loading the namespace of the 'sample' module

  var _super_ = module.View.prototype.value_check;

  module.View.prototype.value_check = function(key, value){
       console.log(key +': '+value);
       _super_.call(this);
      return true;
  };
};

any suggestions? Could it be its because of the inherited tempate? But I can call stuff like render_cell from the web module js. It even doesn't work if I put the check_value into the view_list.js of the web module.