Houdini Apprentice can't export Alembic, so that may be there reason, unless you have Education version which also produces hipnc files, which should be able to export .abc https://www.sidefx.com/products/compare/ [www.sidefx.com]
Thanks I found the solution, I just had to add a trail node and export the web and the drops separatly, but now I can export the web that is geometry and put it on c4d so it's fine, but the drops are not geometry it's just points so in c4d it's displayed as point and not geo did you have a solution for that ? Thanks