TransformColumn error, cant apply Field access to type text

[mts]

I have a column with Text and with numbers, my goal is, if its a number then Null else kept the Text value.

the Column type is mixed BUT if i do an "add Column" and use  if Value.Is([Value], type text) then [Value] else null this  works as new column BUT id rather transform in place.

I have tried these methods and they both return same error message above. can you assist with proper syntax. thanks.(screenshot of data below)

= Table.TransformColumns(#"Filled Up1", { "Value", 
each  if Value.Is([Value], type text ) then [Value] else null })

= Table.TransformColumns(#"Filled Up1", { "Value", 
each let field = _  in if Value.Is( field , type text ) then [Value] else null })

[Vijay_A_Verma · Accepted solution]

Use this

Table.ReplaceValue(#"Filled Up1", each [Value], each if [Value] is text then [Value] else null, Replacer.ReplaceValue, {"Value"})