How to create Customized lookup by using select statment?

Hi ,

 i have write a code for this bassed on below link but it shows errors , they are

DictEnum object not initialized.

(C)\Forms\SysLookup\Methods\run - line 9
(C)\Classes\FormStringControl\performFormLookup
(C)\Classes\SysLookup\lookupList - line 13
(C)\Forms\EAMPMScheduleGenerate\Designs\DesignList\MeterCode\Methods\Lookup - line 27

how to resolve this errors ?

for refarence the link is

http://daxprogrammingtips4u.blogspot.in/2011/02/how-to-override-lookup-method-of-field.html

Thanks In Advance