Problem due to uploading of data into Internal table using executable program

Hi,

I am doing program to upload the data into internal table without using LSMW and BDC, simply through program. When I upload the data it shows # sign, I took four field and in output it shows { 8038320962     #YF2     D     # }  instead of  { 8038320962     YF2D     L     M }, that fields are vbeln   fkart  fktyp  vbtyp respectively. I used in that program two function modules F4_FILENAME and GUI_UPLOAD. Please help me out to solve this.