To add checkbox and dropdown propery for DocumentType Proper

[bisana]

Hi
I have been success in defining a document type with some properties based on text and date, and I am able to see  it when I check the document property.
Now I need to : - while viewing the properties, some of the field need to have check box and others drop down for users to select the desired properties.
I have been checking "dictionaryModle.xml" .
What direction should I move to have "dropdown" and "check box" on the property defined in the document Type
Guidance and advice requested
Thanks

[mitpatoliya]

Check box = look for type boolean
Drop Down= Add List constrain to the property with data type string.

[bisana]

Thanks Mits
Drop box worked for me
About Drop Down option, I was not able to do it. I am trying out options given in "http://wiki.alfresco.com/wiki/Constraints"
But it is not working out, is there any documentation in adding drop  down option to ContentType
Thanks
Joseph John

[bisana]

Thanks Mits,
You post helped me a lot, it helped to narrow my search and I was able to enable drop down
Now "Drop Down" also working
Refereed  Page No 62, Chapter 3 [Working with Content Models] Step-by-Step: Adding Properties to Types of Book "Alfresco Develpers Guide " by Jeff Pots
Thanks
Joseph John