which of the solutions is right?

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@EN_9902818 wrote:

Hi,

 

I'm trying to find a variable and I've tried three ways of doing this. Please see attached.

I used an If statement and then put it in a program. Unfortunately, I can't see what is the difference among these 3 but I get different results. My preferred option is the program but I can't find why it is wrong..

 

Could you please check:)

 

thanks, 

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Your last option doesn't work because it returns the error message, and you've pre-added kPa in the evaluation operator units placeholder ... and strings don't take units.  I suggest that in cases such as Option 3, you put the units in the return expression.

Stuart