@newuserkantu Agreed. Not to sidestep your advice, however I am looking to do something similar. 
@ulrich
Please could you advise?
Would be useful to know how to get this output in the tool as a variable:
${myCSV[0][0]}${KEY_ENTER}${myCSV[1][0]}${KEY_ENTER}...${myCSV[99][0]}
or
${myCSV[0][0]}\n${myCSV[1][0]}\n...${myCSV[99][0]}
So we can send a command like this, which has been recommended above.
Sendkeys| xpath=line1… | ${myCSV[0][0]}${KEY_ENTER}${myCSV[1][0]}${KEY_ENTER}...${myCSV[99][0]}
Fairly new programmers, and so the concept is basic but new to us.
In the link below, I have attempted something like:
store | | VarList
executeScript_Sandbox | return (${VarList})+${row[${RowCounter}][${ColCounter}]} | VarList
Initially this worked, however on moving to CsvReadArray, I have received some errors. The script has stopped feeding in the correct values or recognising the row array as a declared variable
Link: How to append a column as comma separated variable? Currently get undefined error