VMTK centrelines - stl format in ascii mode

I want to create a centerline for my patient specific geometry. I have successfully created in .vtp format using VMTK sotware.

code:

vmtksurfacereader -ifile “E:/geometry/v3_shortIliacExtendIMACAP_V2_vtmk.stl” --pipe vmtkcenterlines -seedselector openprofiles -ofile “C:/Users/Dhaya/surface_centerlines.vtp”

will it possible to create or convert to .stl format in ascii mode?

Note: The above generated .stl file is imported into the Ansys CFD Post.

Operating system: Windows 10
Slicer version: VMTK 1.4.0 software
Expected behavior:
Actual behavior:

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