Dynamic filtering of picklist values CRM 3.0

Hi,

I would like to create dynamic filtering of picklist values in CRM 3.0.

But I have a problem for to delete dynamically my picklist option.it is really random.

// It's here my problem
var count = oSepcialisation.Options.length;
for(var i=0; i < count; i++)
{
try
{
oSepcialisation.DeleteOption(parseInt(i)); // sometime this function deletes option, sometime doesn't.
}
catch(ex){ alert(ex);}
}

-------------------------------------------------------------------------------------------------------------------------

For to reproduce the same condition, you must create 3 attributs of type picklist
- new_dev_competency (parent picklist)
- new_dev_specialisation (child picklist)
- new_dev_orginalspecialisation (must be empty)

new_dev_competency value :
value="1" text = "competency 1"
value="2" text = "competency 2"

new_dev_specialisation value :
value="1" text = "1-specialisation 1"
value="2" text = "2-specialisation 2"
value="3" text = "2-specialisation 3"
value="4" text = "1-specialisation 4"

prefixes 1- et 2- .correspond to the ID of the competence to which this specialization is linked

//Code in OnLoad() Form
var oSepcialisation = crmForm.all.new_dev_specialisation;
var oOriginal = crmForm.all.new_dev_orginalspecialisation;

//I delete all elements from my picklist
for(var i=1; i < oOriginal.Options.length; i++)
{
oOriginal.DeleteOption(i);
}
//I add all original elements
for(var i=1; i < oSepcialisation.Options.length; i++)
{
oOriginal.AddOption(oSepcialisation.Options.Text,oSepcialisation.Options.DataValue);
}

//Code in OnChange() of my Competency picklist

var CRM_FORM_TYPE_CREATE = 1;
var CRM_FORM_TYPE_UPDATE = 2;

switch (crmForm.FormType)
{

case CRM_FORM_TYPE_CREATE:
case CRM_FORM_TYPE_UPDATE:

var oSubIndustry = crmForm.all.new_dev_specialisation;
oSubIndustry.originalPicklistOptions = oSubIndustry.Options;

if (crmForm.all.new_dev_competency.DataValue == null)
{
oSubIndustry.Disabled = true;
}
else
{
oSubIndustry.Disabled = false;
if(oSubIndustry.DataValue == null)
{
new_dev_specialisation_onchange0();
}
}
break;
}

//Code in OnChange() of my Specialisation picklist

var oCompetency = crmForm.all.new_dev_competency;
var oSepcialisation = crmForm.all.new_dev_specialisation;
var oOriginal = crmForm.all.new_dev_orginalspecialisation;
var myFilter = oCompetency.DataValue;

//I delete all elements from my picklist
// It's here my problem
var count = oSepcialisation.Options.length;
for(var i=0; i < count; i++)
{
try
{
oSepcialisation.DeleteOption(parseInt(i)); // sometime this function deletes option, sometime doesn't.
}
catch(ex){ alert(ex);}
}

//I add all original elements
var count2 = oOriginal.Options.length;
for(var i=0; i < count2; i++)
{
if(oOriginal.Options.Text.indexOf(myFilter + '-') != -1)
{
oSepcialisation.AddOption(oOriginal.Options.Text,oOriginal.Options.DataValue);
}
}

Link referer :
http://blogs.msdn.com/midatlanticcrm/archive/2005/12/04/499868.aspx CommentPosted=true#commentmessage