Loading multiple waves from multiple .txt files

What I'd like to do is to be able to select multiple .text files and load in two waves from each (1st and 3rd columns). 'Open' lets me select multiple files but then once the for loop starts, it opnes 3 more windows for me to select files. I was hopeing LoadWave would load the first column in each file in 'loadedFiles' as t0, t1, t2, etc. and the third column as c0, c1, c2, etc.

On paper, I'd say this code would do that but LoadWave opens a new file selection window every time it loops. I thought StringFromList(i, loadedFiles) would load the full path name of the file of interest which would negate the need for a selection window. Where is my misunderstanding in this?

Thanks.

Function loadMult()
	variable RefNum
	String message = "Select one or more files"
	String fileName	
	String fileFilters = "Data Files (*.txt,*.dat,*.csv):.txt,.dat,.csv;"
	fileFilters += "All Files:.*;"
	Open /D /R /MULT=1 /F=fileFilters /M=message refNum
    	Print "The RefNUM is: ", refNum
    	String loadedFiles = S_fileName
    	Print loadedFiles[1]
    	Print "The Selected Files are: ", loadedFiles
	
	

 	if (strlen(loadedFiles) == 0)
 		Print "File Contains No Data - Script was Cancelled!!"
    	else
       	Variable numFilesSelected = ItemsInList(loadedFiles, "\r")
        	Variable i
        	for(i=0; i<numFilesSelected; i+=1)	
        		String columnInfoStr = ""
        		columnInfoStr += "N=t" + num2str(i) + ";"
   			columnInfoStr += "C=1,N='_skip_';"   // Skip Column1
			columnInfoStr += "N=c" + num2str(i) + ";"
			LoadWave/J/D/O/L={0,1,0,0,3}/B=columnInfoStr StringFromList(i, loadedFiles)	//This opens more dialog windows
        	endfor
    	endif
    	
    	return 0      
END