pls pls pls need help(Urgent)

hi ,
pls tel m how can i get the selected parameter multivalue to my designer textbox. i have tried like following

1) Parameters!BU.Label - error occured
2) Parameters!BU.value(0) - only first value
3) join(Parameters!BU.value,",") - return the uinquename like [Account dsc].[Business_Unit].&[1]

but i need to get the only selected values. not the uniquename, not the first one. if i select three values in the param it should display. pls help me on this.

You were almost there!!

="Business Units " & JOIN(Parameters!test.Label," ,")