Reading byte array through python script

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Below is the my expression for reading indirect tag to update the array value in power table.

runScript("system.dataset.toDataSet(['Slave', 'Value'], [[i,value] for i,value in enumerate(system.tag.readBlocking(" + {DirectTag.tagPath} + ")[0].value) if value > 0])",0)

I am using template that having power table with custom property of template parameter string to read tag.

Error1
Error11920×1080 123 KB

Error2
Error21920×1080 201 KB

Tag Info

error3
error31920×1080 187 KB

Problem is tag is not reading through above expression and not fetching data to table.

Can we use system.tag.readBlocking() in expression?

Any suggestion much appreciate.