in nested tag how to set values for array of objects

[Bharathiraja]

i am having problem in setting the  value for my business object by iterating array of 
objects in the nested tag .My code for that is 

<nested:iterate id="lineElement" name="MenuGroupForm" property="menuGroupLines" 
scope="request">



"MenuGroupForm" is my formbean and 

"menuGroupLines" is the property which contains array of mybusinessobjects .

i want to set the values for my businessObject
setter methods.

Please give me a syntax with an example for setting the values for mybusinessObject.