[ABAP] Alpha conversion

DATA(lv_matnr) = VALUE matnr( 0000000001 ).
DATA(character_string) = VALUE string( ).

character_string = |Your Material Number is { lv_matnr ALPHA = IN }|.    "Adds leading zeros
character_string = |Your Material Number is { lv_matnr ALPHA = OUT }|.   "Removes leading zeros