|----------------------|
| Create Variable | ( $VariableFind )
|----------------------| / findLast($Object/Name,'@')
This Variable give you the integer of the position of @.
|-------------------------------|
| Create Variable | (VariableNoEmail)
|-------------------------------| /substring($Object/Name,0,$VariableFind)
This Variable starts at 0(the beginning) and ends just before the @.
|----------------------| |-------------------------------|
|Create Variable| -------------------------- | Create Variable |
|----------------------| |-------------------------------|
Try this: