How to get attribute from value ?

Hello experts,
I've following problem:
  DATA: lv_cell TYPE REF TO data.
  DATA: contact type BU_CONTACT_CHAR.
  lv_cell = r_param->value.   'lv_cell contains 1
'now i want to give this paramter to another variable in order to start a fm
move lv_cell to contact.  '=>  retunrs error.
call fm...
How can I give this value to this paramter ?
Thanks
G

Problem solved:
we have to de-refrende the object
and then move it to a vriable.
  DATA: lv_cell TYPE REF TO bu_contact.
  DATA: contacti type bu_contact.
  move lv_cell->* to contacti.

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