Targetlynx limitation for multi-component analysis

Hello everyone, I am trying to build a method to analyze 27 amino acids in plasma. Each amino acid has it own concentration levels. I need to  input these concentration levels in the targetlynx processing methods. As I understood, the only way is to specify a column level for each component in the processing methods. Unfortunately, the column level is selectable only from "A to T" which mean I can only enter the values for 20 amino acids only. Is there away to input higher number?

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