Evaluating XPath Expresssions

XPath Result of XPath Evaluation
count(tokenize(replace('W151TBH', '([0-9]+|[a-zA-Z]+)', '$1#') '#')[.])
3
tokenize(replace('W151TBH', '([0-9]+|[a-zA-Z]+)', '$1#'), '#')[.][1]
'W'
tokenize(replace('W151TBH', '([0-9]+|[a-zA-Z]+)', '$1#'), '#')[.][2]
'151'
tokenize(replace('W151TBH', '([0-9]+|[a-zA-Z]+)', '$1#'), '#')[.][3]
'TBH'