[sdiy] Boss Adapter Question

[kaanb at ug.bilkent.edu.tr]

I don't know if it's the right place to ask this question, I apologise those who think that it's not.
I've a Boss ACA-230G AC-DC adapter with 9V 300mA output. I'm going to use it with my single boss guitar effect pedals.
I wonder if I can use the adapter to operate 3 or 4 of my boss pedals by distributing the power using a daisy chain (parallel connection?). The owner of the shop from where I bought the adapter told me that it is not possible, but a technician told me that I can do this. I just wanted to be sure, I appreciate any help coming from the list.