selection-screen begin of block b1 with frame title text-001.
select-options : p_ftrmi for afko-ftrmi.
selection-screen end of block b1.
INITIALIZATION.
p_ftrmi-sign = 'I'.
p_ftrmi-option = 'BT'.
p_ftrmi-low = sy-datum - 90.
p_ftrmi-high = sy-datum.
append p_ftrmi.
将日期控件范围设置为90天。