Age Limit for Green card applicant

I'm form Sri Lanka, I would like to know about the age limit of Sri Lankan applicants who wish to apply for Green card.
Because, some Sri Lankan migration consultants asked me that there is a specific age limit for Sri Lankans. But,
If I referred the Denmark web site. I couldn't find such details specially applied for Sri Lankan applicants. Thanks.

If there is anything like this it must be mentioned here. http://www.nyidanmark.dk/en-us/coming_t … scheme.htm if its not there then there is no such thing.