jQuery Grid Plugin - jqGrid

Hello, I am enjoying jqgrid and nomrally I am able to find the answer to the issues I encounter by searching the web, this time I failed :

I have a grid application that generates dynamically the js code to build the jqgrid object.

Some columns are dcefined as selects, others as normal text, depending on the table I am browsing.

Note : I am using local data (an array) which displays and updates (with some custom made functions for this) fine

The issue is with the search functionality as the list of values is generated dynamically and placed  in the editoptions.

I noticved that values showed up in the filtertoolbarf, but not in the form search, so I added searchoptions (also to add an "all" option) dynamically in this way :

var cm = $("#grid1").jqGrid('getGridParam','colModel');

 for (var i = 0;i<cm.length;i++)

  { 

   if (cm[i].formatter == "select")

  {

     
      var lst = ":All;"+cm[i].editoptions.value;

      cm[i].searchoptions = {sopt:['eq','ne'] , value : lst};  

  }

 }

 $("#grid1").jqGrid('setGridParam','colModel',cm).trigger("reloadGrid");

I then get again the colmodel and dump it to the chrome console to check that values were set properly, which is the case.

The issues I have are :

1) In the filter toolbar the "all" option is not visible, all the other values are correct for all the columns

2) In the search form the "all" option is visible, but  I always get the first field select values regardless of the field I chose (included the text ones, the search text field remains a select also for stype="text" fields.

Any idea?

Thanks