If you only have one sheet that contains the name TANKS

for each sh in thisworkbook.Worksheets
if instr(1,sh.name,"tanks",vbTextCompare) then
set sh1 = sh
exit for
end if
Next
ActiveChart.SetSourceData Source:=sh1.Range("B8:M103"), _
PlotBy:=xlColumns

or based on your later post

for each sh in thisworkbook.Worksheets
if instr(1,sh.name,"tanks",vbTextCompare) then
sh.name = "Tanks"
exit for
end if
Next
ActiveChart.SetSourceData Source:=Sheet("TANKS").Range("B8:M103"), _
PlotBy:=xlColumns

--
Regards,
Tom Ogilvy


Ray Morton wrote in message
...
I currently have multiple csv files from a SCADA computer system that I
am converting to excel spreadsheets. All of these files have a designated
name like "TANKS000.csv". If the files are not converted within a 24 period
then The SCADA Program will create another CSV file named "TANKS001.csv".
Here is my problem, how can I write the macro to trend my data to a chart no
matter what the worksheet is named? Here is a sample of the macro where I am
getting hung up.

ActiveChart.SetSourceData Source:=Sheet("TANKS000").Range("B8:M103"), _
PlotBy:=xlColumns
I need help!!!!