How to use Table.ReplaceMatchingRows() third paramters?

[Andrew_lu1933]

in document, we see there is third paramters, but we can't find how to use third parameter.

Table.ReplaceMatchingRows(
table as table, 
replacements as list, 
optional equationCriteria as any
)

I have one requirement, if [Name] = "GZ", each [A1] column == [A], [B1]==[B], 

can use Table.ReplaceMatchingRows ?

if use Table.ReplaceValue() only change one column in one time!

[wdx223_Daniel · Accepted solution]

NewStep=Table.FromRecords(Table.TransformRows(PreviousStepName,each if [Name]="GZ" then _&[A1=[A],B1=[B]] else _))