Hi Rida,
You can enhance the DO_PREPARE_OUTPUT method of your view controller and write :
data : lv_size type I,
lr_ent type ref to if_bol_bo_property_access.
lr_ent ?= typed_context->node->collection_wrapper->IF_BOL_BO_COL~FIND( iv_index = lv_size ).
ls_prop ?= lr_ent->get_properties( ).
check ls_prop is initial.
typed_context->node->collection_wrapper->IF_BOL_BO_COL~REMOVE( lr_ent ).