How i can to create a vi, which read from configuration file and i could modify this indicator and save the config data??

Hi guys,
I have in my application a subvi which i use to save the configuration of application. I create one file with the last saved configuration, and i would like to open this values and that i could to modify this indicator value, but i cant since to modify i need 'numeric control' and to read the data from file i need 'numeric indicator '...
I thought, use a numeric control and use the values from file to the default values, but i didnt get to find the property node to adjust it. is it possible? or any different way to get it....??
Also, i attached the capture file.. i would like the program DOESNT SHOW the question of
replace the file!!. i would like directly replace the file when i push save.
Thanks, i attached the vi.
Attachments:
options.vi ‏43 KB
config.cnf ‏1 KB
capture.GIF ‏43 KB

Hi Dennis,
Your 'write to sreadshhet mod' suprime the dialog of replace file or not!, i want when i push save, it show the dialog input name of file and show the default sim000 but when i push this sim000 and this file already exist, then show the dialog to replace or not, if i replace Ok not problem, but when i push cancel replace it shows error eof!!!.
Your file, only remove this dialog and only replace the file directly.
i put the capture, when i choose the file to save and the program say to me this file exist and it give me the option of replace or not,i want when i push cancel replace it continues running without get error.
is it possible?.
Thanks.
Regards, Fonsi.
Attachments:
capture.GIF ‏71 KB
example.vi ‏40 KB

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