need your help here! how can i add bootstrap to my dendrograms

[wenjingcui]

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hi there! It's a very helpful package! When i finidshed the transcriptome sample clustering, but i failded to add bootstraps and couldn't make it even scaned the help pdf. It would be very kind of if you could you give me any help or advice, coz i am a fresh man in this feild, i need your help to make my work move forward! looking forward to your reply! best regards! wenjing cui