tell application "Numbers"
tell document 1 to tell sheet 1 to tell table 1
set value of cell "A1" to 7654
set selection range to range "A1"
tell application "System Events"
tell process "Numbers"
set frontmost to true
keystroke "c" using {command down}
end tell
end tell
set theCellCount to count of every cell of column 1
set theRange to "A1:A" & theCellCount
set selection range to range theRange
tell application "System Events"
tell process "Numbers"
set frontmost to true
keystroke "v" using {command down}
end tell
end tell
end tell
end tell