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无法调用一些用户输入变量（currentWt、height、BMI，然后将在下面的这个 python 脚本中使用并粘贴到剪贴板。有没有人熟悉 alfred 工作流程并且知道我该怎么做？

import json 
import sys

  print ('Current wt: ') + str({var:currentWt}) + (' lbs (') + str({var:currentWt}/2.2) + (' kg)')
    print ('Height: ') + str({var:height}) + (' inches')


    BMI = ({var:currentWt} / 2.2) / (({var:height} * 0.0254) **2 )


    print ('BMI: ' + str(BMI))

    hamwiMale = (106 + (6 * ({var:height} - 60)))
    hamwiFemale = (105 + (5 * ({var:height} - 60)))

    if {var:gender} == 'Male':
        print ('IBW (calculated using Hamwi): ') + str(hamwiMale)
    elif {var:gender} == 'Female':
        print ('IBW (calculated using Hamwi): ') + str(hamwiFemale)
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