dynamic parameters at selection- screen

hi experts,

i have one requirement.

input : months range(ex: 20010 to 200701--- only 4 months).

depending on this input, i have to enter data for each month, in the above.

can u please send mesome code or idea , how to approach in this one.

ex: p_200610,

p_200611

p_200612

p_200701.

here i need to enter the data for 4 months only, which is entered in the input.