please can someone help me to get the shadow through the transparency?

here is the shader:

and the .mpj file:
transparencyShadow.mpj
thank you in advance 
please can someone help me to get the shadow through the transparency?

here is the shader:

and the .mpj file:
transparencyShadow.mpj
thank you in advance 
hello tinyc,
if i put it in the transparency channel (which i have already tried before asking for help):

i still get the wrong shadow:

did it work for you?
thank you for your help
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