how to combine two text local variables

a!localVariables(
  local!Var1 : "Hello,",
  local!Var2 : "World!",
  local!combinedText : local!Var1 & local!Var2, 
  /*or*/
  /*local!combinedText : concat( local!Var1,local!Var2),*/
  local!combinedText
)

Also : 

Using "&" inside concat() is nonsense. Concat takes any number of parameters. I changed this in my example below.

And there is no need to declare a local variable just to define the output of an expression. I see that a lot recently and really wonder where this is coming from.

a!localVariables(
  local!Var1 : "Hello,",
  local!Var2 : "World!",
  
  concat(local!Var1, local!Var2)
)

Using "&" inside concat() is nonsense. Concat takes any number of parameters. I changed this in my example below.

And there is no need to declare a local variable just to define the output of an expression. I see that a lot recently and really wonder where this is coming from.

a!localVariables(
  local!Var1 : "Hello,",
  local!Var2 : "World!",
  
  concat(local!Var1, local!Var2)
)

Thank You , by mistake I typed it.