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

[wenjingcui]

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