Weibull analysis with confidence interval in spss

Question

I’m trying to do the Weibull analysis and to show the confidence interval in spss. I have the following variables:

• Shear bond strength, which shows the maximal strength till the material breaks
• Adhesive type Weibull gradient line should be done for each adhesive type specifically.

I have tried with following analysis:

• Parametric accelerated failure time
• Life tables
• Kaplan-Meier As soon as I put the strength variable in the time field or in any field everything grays out and I can’t perform the analysis. I don’t have missing data. I also tried with status= 1 but still doesn’t function. How can I solve this problem?