thanks fabrizion in fact i dont have problem with sen2COR COORECTION I MAKE CORRECTION CORRECTELY Im RESAMPLING BAND of SENTINEL 2A LEVEL 2 producted IN SNAP I GOT SWIR BAND WITH 10 M RESOLUTION BUT when i export it in geotiff format to open it for more processing in qgis scp plugin i found that swir band is still in 20 M RESOLUTION