% based brick size in renko


i an using renko charts & facing a problem. the brick size ii can set in fixed in rupee terms.

if i set rs 5 brick value for a stock which is trading at 500 it is 1% movement buy if the stock comes down to 100 the the same 5rs brick value will be formed at 5% movement & if i change the brick value to 1 making it 1% then my original analysis at rs 500 will change completely.

Solution is that if i set 1% brick size instead of fix value new brick will be formed only after 1% movement.

so while setting brick value plz provide option of setting fix value as well as % value