reshape wide to long with big

[Salvatore Greco]

hello,
I am working with panel data and I would like to convert data from wide format to long format with the purpose to carry out the following regressions. I have different variables (all numerics but one named "banche" the Italian word for "banks")
The variables are the following (all from 2021 to 2010):
npl (meaning npl2021, npl2020....., npl2010);
netinterestmargin (meaning netinterestmargin2021....., netinterestmargin2010)
avgequityavgassets (same)
costtoincome (same)
roaa (same)
llp (same)
assets (same)

I tried to post here the data but the output was really bad. If you need the exact data, please tell me how and I would be pleased to help you.

Ps I apologize but I don't how to show you the variables without reporting all the numbers (the dataset has over 11,000 observations)
I would like to have long format using "banche" as "i" and the time as "j". Could you please help me?
I used this command but it does not work.

reshape long npl, netinterestmargin, avgequityavgassets, costtoincome2021, roaa, llp, assets, i(banche) j(year)

it says

invalid 'avgequityavgassets'

I tried even with the following command

. reshape long *, i(banche) j(j)

I tried several times but I cannot understand why. Please help me.
Thanks a lot to everybody

[Clyde Schechter]

Get rid of all the commas, except the one before i(banche).

[Salvatore Greco]

Thanks a lot Clyde for the awesome help you are giving me.
King regards

[Jared Greathouse]

What happens when you type in

dataex in 1/100