An argument of 'series string' type was used but a 'simple string' is expected when comparing close and vwap

Question

When trying this code:

strategy.risk.allow_entry_in(close > ta.vwap(hlc3) ? strategy.direction.long : strategy.direction.short)

I get this error:

An argument of 'series string' type was used but a 'simple string' is expected

It happens from this:

close > ta.vwap(hlc3)

I am just trying to say that it should return true if the close is above vwap. What am I doing wrong here?

Sorry I'm new to pine and this is my first script.

Answer 1

simple string means the variable's value should never change during the execution of the script.

You are passing your parameter with the ternary operator so its return value can change.