How to use concat function for concatenates string and field?

I am getting syntax error in computation express?

1. Concat(ToText("Major Version"),., ToText("Minor Version"),., ToText("Build Number"))”

2. Concat(ToText("Major Version"),".", ToText("Minor Version"),".", ToText("Build Number"))”

where

Major Version, Minor Version, Build Number are Integer fields

1-Visitor

You need to use the Text() function around strings. Strings by themselves are interpreted as field names and you don't have a field called "."

For example:

concat(text("Copyright "),ToText(getYear(now())),text(" My Company Ltd.."))

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