dynamic issue

[CreateAndInject]

dynamic.zip

public static bool TestSingleKeyPairComplete(object viewModel, string validationKeyHex, string decryptionKeyHex, string viewStateB64, string modifier)
{
  ......................
			CompleteIntegration.WriteToRichTextBox((dynamic)viewModel, "[+] COMPLETE SUCCESS!", Colors.Green);
			CompleteIntegration.WriteToRichTextBox((dynamic)viewModel, "    Validation Algorithm: " + tuple.Value.Item1, Colors.Green);
			CompleteIntegration.WriteToRichTextBox((dynamic)viewModel, "    Decryption Algorithm: " + tuple.Value.Item2, Colors.Green);
			CompleteIntegration.WriteToRichTextBox((dynamic)viewModel, "    .NET Mode: " + tuple.Value.Item3, Colors.Green);
			Type typeFromHandle = typeof(CompleteIntegration);
			byte[] item = tuple.Value.Item4;
			typeFromHandle.WriteToRichTextBox((dynamic)viewModel, $"    Decrypted Data Length: {((item != null) ? item.Length : 0)} bytes", Colors.Green);

See last line, should be CompleteIntegration.WriteToRichTextBox((dynamic)viewModel, $" Decrypted Data Length: {((item != null) ? item.Length : 0)} bytes", Colors.Green) ?