code: public void setBlastGapCosts(int gapCreation, int gapExtension) {
  		String gc = Integer.toString(gapCreation);
  		String ge = Integer.toString(gapExtension);
  		setAlignmentOption(GAPCOSTS, gc + "+" + ge);
  	}
docs: Sets the GAPCOSTS parameter
  
  @param gapCreation integer to use as gap creation value
  @param gapExtension integer to use as gap extension value