Dynamick picklist in MS CRM 3.0

Let's start from the Error message:

'originalPicklistOptions' is null or not an object'

I am trying to create a classic Sector and Sub Sector dependancy.

Marius

*****

var oIndustry = crmForm.all.new_sector;

var iStartIndex = -1;
var iEndIndex = -1;

switch (oIndustry.SelectedText)
{
case "Agriculture":
iStartIndex = 1;
iEndIndex = 2;
break;

case "Automotive":
iStartIndex = 3;
iEndIndex = 5;
break;

case "Food Drink & Tabacco":
iStartIndex = 6;
iEndIndex = 9;
break;
}

var oSubIndustry = crmForm.all.new_subsector;

if (iStartIndex > -1 && iEndIndex > -1)

{
var oTempArray = new Array();
var iIndex = 0;

for (var i = iStartIndex; i <= iEndIndex; i++)

{
oTempArray[iIndex] = oSubIndustry.originalPicklistOptions;
iIndex++;
}

oSubIndustry.Options = oTempArray;

oSubIndustry.Disabled = false;
}

else

{
oSubIndustry.DataValue = null;
oSubIndustry.Disabled = true;
}

*****

[1222 byte] By [MariusAugust] at [2007-12-25]