multiple TKeys to an object w/ different cycle number

Dear rooters,

Are there any possibility to have multiple TKeys to an object with an identical name but different cycle number, in a single root file?

I wrote a code which creates a TTree and some TH1Fs and saves them in a root file, but I observe ther're two keys to the tree...

I'm using ver.5.14/00 of root.

Thanks in advance...

Yours,
Kazuyoshi

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Kazuyoshi Furutaka
furutaka _dot_ kazuyoshi _at_ jaea _dot_ go _dot_ jp