Error generating the selection screen

Hello All,

I get an error when activating the report pgm with below code.

"Error when generating the selection screen'

I am assuming the problem is with the value provided in the Selection-screen comment. Tried changing it many times and gave up.

It works allright when I comment out those two lines (Selection-screen comment).

What is wrong in this code?  Any ideas?

Thanks.

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SELECTION-SCREEN BEGIN OF BLOCK param WITH FRAME TITLE frame.
  SELECTION-SCREEN BEGIN OF LINE.
  SELECTION-SCREEN COMMENT 10(10) scr_pnam FOR FIELD lv_name.
  PARAMETERS: lv_name TYPE SPFPFLPAR-PARNAME DEFAULT 'rdisp/btctime'.
  SELECTION-SCREEN COMMENT 50(10) scr_pval FOR FIELD lv_value.
  PARAMETERS: lv_value TYPE spfpflpar-pvalue VALUE CHECK OBLIGATORY.
  SELECTION-SCREEN END OF LINE.
SELECTION-SCREEN END OF BLOCK param.

INITIALIZATION.

  frame = 'プロファイルパラメータ更新'.
  scr_pnam = 'パラメータ名'.
  scr_pval = 'パラメータ値'.

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