[SOLVED] Write results in different files automatically?

Hi everyone,

i'm doing some clustering and want to bring up some cluster-models (k-medeoids) using different model-parameters (number of clusters, max runs, max optimization steps, ...). Doing so i used the "optimize"-Operator to generate several cluster-models using different parameters. I need the clustered data for further analytics (doesn't matter if the used parameter combinations are perfect or not) so i use the "write excel"-operator to extract the generated data into an excel sheet. But doing so i only get the clustered data of the first run (eg. when k was 2) into the final excel file. In the "optimize"-operator i tell the process it should change (for example) the number of clusters from k= 2 to 20.

My Question:
Is is it possible to change the name of the Output-File automatically during the process is running?

I mean it this way:
choose k=2 --> do the clustering --> save the results to file named "results_k_2.xls"
choose k=3 --> do the clustering --> save the results to file named "results_k_3.xls"
...
choose k= 20 --> do the clustering --> save the results to file named "results_k_20.xls"

Thanks for help.

Greetings,
Thomas