title: Asterisk in variable not considered like % in SQL
body: <p>I created these three radio buttons to define values to the variable <code>TEST</code>.</p>
  <p>The first two work just fine: if I click in <code>p_r1</code> it assigns <code>B</code> and if I click <code>p_r2</code> it assigns <code>A</code>.</p>
  <p>I wanted the third to assign <code>*</code> to get all status i.e A, B, C.</p>
  <p>Why doesn't it work? Isn't <code>*</code> a special character that means all like <code>%</code> in SQL?</p>
  <pre><code>DATA: TEST TYPE C.
  
  PARAMETERS:
    P_R1 RADIOBUTTON GROUP GRP1 DEFAULT 'X',
    P_R2 RADIOBUTTON GROUP GRP1,
    P_R3 RADIOBUTTON GROUP GRP1.
  
  IF P_R1 = 'X'.
    TEST = 'B'.
  
  ELSEIF P_R2 = 'X'.
    TEST = 'A'.
  
  ELSEIF P_R3 = 'X'.
    TEST = '*'.
  
  ENDIF.
  
  SELECT  VBELN,GBSTK
    FROM LIKP
    WHERE GBSTK = @TEST
    INTO TABLE @DATA(IT_FINAL).
  
  
  CL_DEMO_OUTPUT=&gt;DISPLAY( IT_FINAL ).
  </code></pre>