Acceleo in Capella 1.3.1 - "export to SLIM" missing

Hello,
I write this post, because I didn’t get answer to the “acceleo” keyword in the search bar.
I would like to export a Capella model as a “SLIM” model, using the Acceleo module.
The objective later is to import the SLIM model in another tool named “COMPASS” to perform analysis.
The process is described in page_19.jpg.
See also attached pdf document, which is freely available on the Internet. ( I could not add a link as a new user).
The problem is :
After I installed Acceleo 3.7 in Capella 1.3.1, I cannot select : “acceleo to text\generate SLIM model”
I only have the options : “accelero\do no generate” and “accelero\generate csv report”
See my_screen.png.
Do you know how to get this option “acceleo to text\generate SLIM model” appear ?
Thanks

page_19.jpg
my_screen.png
04_DeFerluc_Model_Based_FDIR_Proces_dec-2016-TAS-F.pdf
page_19.jpg
my_screen.png
04_DeFerluc_Model_Based_FDIR_Proces_dec-2016-TAS-F.pdf

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