Power Query nested if evaluation order

Hi,
I have a question re the order of using nested if's in PQ,

I want to make 'numbers" = 1000 and text strings thant start with 'a' = "AAA , if first tried this,

Does not work;

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The first if does but I get an error for numbers, so I changed the order and this works

Works;

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I can't see why they outcome should differ? I have tried by putting an if to text if it is text before taking the first value but still no good,

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Can someone point out the evaluation order ?

Richard.

Thanks, re the order yes I argued it through in my head and sort of see what you mean,

but then thought starts with = fail = otherwise try this if, so just ended up confursed.

RD

Thanks saying that in my head does make sense,

RD

Would give rep but won't allow.