excel - transferring variable form one workbook to another woorkbook vba -

i still newbies in vba programming

i have simple questions looking simple methode if possible.

i creating userform( userform1) in workbooka , in userform, i'll needing module(module1) created in other workbook( workbookb) made calculation. in order launch calculation, module need info( ttaa, tolerance). love know easiest way transfer variable userform1(workbooka.userform1) module1(workbookb.module1) , re-transfer results userform1.

below, can find small part of programm i've coded call module.

ttaa = cdbl(me.ttaa_textbox.value) tolerance = cdbl(me.tolerance_textbox.value) application.run ("'workbooks.xls'!module1") 

i've declared public, variable ttaa , tolerance in module1

really appreciated help. in advance

the easiest way (which know work) temporarily "save" variable on sheet in 1 of either file , reference as

worksheets.add.name = "tmp" workbooks(workbooka.name).worksheets("tmp").range("a1").value2 'and remove later on application.displayalerts = false workbooks(workbooka.name).worksheets("tmp").delete application.displayalerts = true 

an alternative might declare subs in workbookb functions. apart public variables way return values (in native format) independent vba code segments. yet, if had no luck public variables doubt work.

but why don't import module workbooka instead? following answer might able that. writing macro writes macro excel-file